735 lines
16 KiB
TypeScript
735 lines
16 KiB
TypeScript
namespace AdventOfCode2019_15_2
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{
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const DAY = 15;
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const PROBLEM = 2;
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export async function run()
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{
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let input = await AdventOfCode.getInput(DAY);
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if (input == null) return;
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const code = input.trim().split(",").map(p => parseInt(p.trim()));
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let wm = new WorldMap();
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let rnr = new Interpreter(code, []);
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let d = Direction.North;
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await AdventOfCode.outputIntermed(wm.dump());
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for(;;)
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{
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if (wm.isfree(move_pos(wm.position, turn_right(d))))
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{
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d = turn_right(d);
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}
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rnr.inputqueue.push(d);
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rnr.autoRun();
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if (rnr.is_halted) throw "halted";
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if (rnr.output.length !== 1) throw "out";
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let nx = wm.position[0];
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let ny = wm.position[1];
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if (d === Direction.North) ny--;
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if (d === Direction.East) nx++;
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if (d === Direction.South) ny++;
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if (d === Direction.West) nx--;
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if (rnr.output[0] === 0)
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{
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wm.set_wall(nx, ny);
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d = turn_left(d);
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}
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else if (rnr.output[0] === 1)
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{
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wm.set_empty(nx, ny);
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wm.position = [nx, ny];
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}
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else if (rnr.output[0] === 2)
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{
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wm.set_target(nx, ny);
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wm.position = [nx, ny];
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}
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rnr.output = [];
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await AdventOfCode.outputIntermed(wm.dump());
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if (wm.unknowns.length === 0) break;
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}
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await AdventOfCode.outputIntermed(wm.dump());
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const time = await wm.calcFillTime();
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AdventOfCode.output(DAY, PROBLEM, time.toString());
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}
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function turn_right(d: Direction): Direction
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{
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if (d === Direction.North) return Direction.East;
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if (d === Direction.East) return Direction.South;
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if (d === Direction.South) return Direction.West;
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if (d === Direction.West) return Direction.North;
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throw "d";
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}
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function turn_left(d: Direction): Direction
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{
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if (d === Direction.North) return Direction.West;
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if (d === Direction.East) return Direction.North;
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if (d === Direction.South) return Direction.East;
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if (d === Direction.West) return Direction.South;
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throw "d";
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}
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function move_pos(p: [number, number], d: Direction): [number, number]
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{
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let nx = p[0];
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let ny = p[1];
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if (d === Direction.North) ny--;
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if (d === Direction.East) nx++;
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if (d === Direction.South) ny++;476
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if (d === Direction.West) nx--;
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return [nx, ny];
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}
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enum Direction
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{
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North = 1,
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South = 2,
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West = 3,
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East = 4,
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}
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enum Field
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{
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Unknown = 0,
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Wall = 1,
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Empty = 2,
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POI = 3, // possible new way to go, but unknown
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Target = 4,
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Path = 5,
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}
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class WorldMap
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{
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world: { [_:number]: Field } = {};
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unknowns: [number, number][] = [];
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position: [number, number] = [0, 0];
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minx: number = 0;
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miny: number = 0;
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maxx: number = 0;
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maxy: number = 0;
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target_pos: [number,number] = [NaN, NaN];
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distance_map: { [_:number]: number } = {};
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constructor()
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{
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this.set_empty(0, 0);
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}
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async calcFillTime(): Promise<number>
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{
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let oxy_map: { [_:number]: boolean } = {};
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let next: [number, number][] = [];
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next.push([this.target_pos[0], this.target_pos[1]]);
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let counter = -1;
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for(;;)
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{
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let ls = Object.assign([], next);
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next = [];
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let updates = 0;
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for(let pos of ls)
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{
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const x = pos[0];
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const y = pos[1];
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const i = (y*10000000 + x);
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if (i in oxy_map) continue;
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oxy_map[i] = true;
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updates++;
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if (this.isfree([x-1, y])) next.push([x-1, y]);
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if (this.isfree([x+1, y])) next.push([x+1, y]);
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if (this.isfree([x, y-1])) next.push([x, y-1]);
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if (this.isfree([x, y+1])) next.push([x, y+1]);
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}
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await AdventOfCode.outputIntermed(this.dump4(oxy_map));
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if (updates === 0) return counter;
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counter++;
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}
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}
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async calcDistance(): Promise<number>
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{
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this.position = [0,0];
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let distance_map: { [_:number]: number } = {};
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distance_map[0] = 0;
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let updates: [number, number][] = [];
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updates.unshift([-1,0]);
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updates.unshift([+1,0]);
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updates.unshift([0,+1]);
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updates.unshift([0,-1]);
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while(updates.length > 0)
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{
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const pos = updates.pop();
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if (pos === undefined) throw "undef";
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if (!this.isfree(pos)) continue;
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const x = pos[0];
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const y = pos[1];
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const i = (y*10000000 + x);
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const i_n = ((y-1)*10000000 + (x));
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const i_e = ((y)*10000000 + (x+1));
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const i_s = ((y+1)*10000000 + (x));
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const i_w = ((y)*10000000 + (x-1));
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const d_curr = (i in distance_map) ? distance_map[i] : Number.MAX_SAFE_INTEGER;
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const d_n = (i_n in distance_map) ? distance_map[i_n] : Number.MAX_SAFE_INTEGER;
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const d_e = (i_e in distance_map) ? distance_map[i_e] : Number.MAX_SAFE_INTEGER;
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const d_s = (i_s in distance_map) ? distance_map[i_s] : Number.MAX_SAFE_INTEGER;
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const d_w = (i_w in distance_map) ? distance_map[i_w] : Number.MAX_SAFE_INTEGER;
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let d_new = Math.min(d_n, d_e, d_s, d_w);
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if (d_new !== Number.MAX_SAFE_INTEGER) d_new++;
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await AdventOfCode.outputIntermed(this.dump2(distance_map, updates));
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if (d_curr <= d_new) continue;
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distance_map[i] = d_new;
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updates.unshift([x+1, y]);
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updates.unshift([x-1, y]);
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updates.unshift([x, y+1]);
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updates.unshift([x, y-1]);
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}
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await AdventOfCode.outputIntermed(this.dump2(distance_map, updates));
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let tpos = this.target_pos;
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for(;;)
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{
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const x = tpos[0];
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const y = tpos[1];
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const i = (y*10000000 + x);
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const d = distance_map[i];
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const i_n = ((y-1)*10000000 + (x));
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const i_e = ((y)*10000000 + (x+1));
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const i_s = ((y+1)*10000000 + (x));
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const i_w = ((y)*10000000 + (x-1));
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const d_n = (i_n in distance_map) ? distance_map[i_n] : Number.MAX_SAFE_INTEGER;
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const d_e = (i_e in distance_map) ? distance_map[i_e] : Number.MAX_SAFE_INTEGER;
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const d_s = (i_s in distance_map) ? distance_map[i_s] : Number.MAX_SAFE_INTEGER;
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const d_w = (i_w in distance_map) ? distance_map[i_w] : Number.MAX_SAFE_INTEGER;
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if (d === 1) break;
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if (d_n+1 === d)
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{
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tpos = [tpos[0], tpos[1]-1];
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this.set(tpos[0], tpos[1], Field.Path);
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}
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else if (d_e+1 === d)
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{
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tpos = [tpos[0]+1, tpos[1]];
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this.set(tpos[0], tpos[1], Field.Path);
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}
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else if (d_s+1 === d)
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{
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tpos = [tpos[0], tpos[1]+1];
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this.set(tpos[0], tpos[1], Field.Path);
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}
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else if (d_w+1 === d)
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{
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tpos = [tpos[0]-1, tpos[1]];
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this.set(tpos[0], tpos[1], Field.Path);
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}
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else throw "";
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}
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return distance_map[(this.target_pos[1]*10000000 + this.target_pos[0])];
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}
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isfree(p: [number, number]): boolean
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{
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const f = this.get(p[0], p[1]);
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return (f !== Field.Wall) && (f !== Field.Unknown);
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}
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get(x: number, y: number): Field
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{
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const i = (y*10000000 + x);
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if (!(i in this.world)) return Field.Unknown;
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return this.world[i];
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}
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set(x: number, y: number, f: Field)
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{
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const i = (y*10000000 + x);
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if (this.world[i] === Field.POI) this.unknowns = this.unknowns.filter(p => p[0] !== x || p[1] !== y);
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this.world[i] = f;
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if (f === Field.POI) this.unknowns.push([x, y]);
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if (f === Field.Target) this.target_pos = [x, y];
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this.minx = Math.min(this.minx, x);
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this.maxx = Math.max(this.maxx, x);
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this.miny = Math.min(this.miny, y);
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this.maxy = Math.max(this.maxy, y);
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}
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set_empty(x: number, y: number)
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{
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this.set(x, y, Field.Empty);
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if (this.get(x-1, y) === Field.Unknown) this.set(x-1, y, Field.POI);
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if (this.get(x+1, y) === Field.Unknown) this.set(x+1, y, Field.POI);
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if (this.get(x, y-1) === Field.Unknown) this.set(x, y-1, Field.POI);
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if (this.get(x, y+1) === Field.Unknown) this.set(x, y+1, Field.POI);
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}
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set_target(x: number, y: number)
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{
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this.set(x, y, Field.Target);
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if (this.get(x-1, y) === Field.Unknown) this.set(x-1, y, Field.POI);
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if (this.get(x+1, y) === Field.Unknown) this.set(x+1, y, Field.POI);
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if (this.get(x, y-1) === Field.Unknown) this.set(x, y-1, Field.POI);
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if (this.get(x, y+1) === Field.Unknown) this.set(x, y+1, Field.POI);
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}
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set_wall(x: number, y: number)
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{
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this.set(x, y, Field.Wall);
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}
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dump(): string
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{
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let str = "";
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for(let yy=this.miny;yy<=this.maxy;yy++)
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{
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for(let xx=this.minx;xx<=this.maxx;xx++)
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{
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if (xx === this.position[0] && yy === this.position[1])
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{
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str += "X";
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}
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else if (xx === 0 && yy === 0)
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{
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str += "0";
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}
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else
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{
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switch(this.get(xx, yy))
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{
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case Field.Empty: str += "."; break;
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case Field.POI: str += "?"; break;
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case Field.Target: str += "@"; break;
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case Field.Unknown: str += " "; break;
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case Field.Wall: str += "#"; break;
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case Field.Path: str += "="; break;
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}
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}
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}
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str += "\n";
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}
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return str;
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}
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dump2(distance_map: { [_:number]: number }, updates: [number, number][]): string
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{
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let str = "";
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for(let yy=this.miny;yy<=this.maxy;yy++)
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{
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for(let xx=this.minx;xx<=this.maxx;xx++)
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{
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const i = (yy*10000000 + xx);
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if (this.get(xx, yy) === Field.Wall)
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{
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str += "#";
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}
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else if (updates.filter(u => u[0] === xx && u[1] === yy).length > 0)
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{
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str += "@";
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}
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else if (i in distance_map)
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{
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str += "+";
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}
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else
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{
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str += ".";
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}
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}
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str += "\n";
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}
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return str;
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}
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dump3(): string
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{
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let str = "";
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for(let yy=this.miny;yy<=this.maxy;yy++)
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{
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for(let xx=this.minx;xx<=this.maxx;xx++)
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{
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if (xx === 0 && yy === 0)
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{
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str += "X";
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}
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else
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{
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switch(this.get(xx, yy))
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{
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case Field.Empty: str += " "; break;
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case Field.POI: str += " "; break;
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case Field.Target: str += "@"; break;
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case Field.Unknown: str += " "; break;
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case Field.Wall: str += "#"; break;
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case Field.Path: str += "."; break;
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}
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}
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}
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str += "\n";
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}
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return str;
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}
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dump4(oxy_map: { [_:number]: boolean }): string
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{
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let str = "";
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for(let yy=this.miny;yy<=this.maxy;yy++)
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{
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for(let xx=this.minx;xx<=this.maxx;xx++)
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{
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const i = (yy*10000000 + xx);
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if (this.get(xx, yy) === Field.Wall)
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{
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str += "#";
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}
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else if (xx === this.target_pos[0] && yy === this.target_pos[1])
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{
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str += "X";
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}
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else if (i in oxy_map)
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{
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str += "@";
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}
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else
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{
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str += " ";
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}
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}
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str += "\n";
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}
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return str;
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}
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}
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class Interpreter
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{
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program: InfMem;
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inputqueue: number[];
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instructionpointer: number;
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output: number[];
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relative_base: number;
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is_halted: boolean = false;
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constructor(prog: number[], input: number[])
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{
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this.program = new InfMem(prog);
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this.inputqueue = input;
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this.instructionpointer = 0;
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this.output = [];
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this.relative_base = 0;
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}
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fullRun() : number[]
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{
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while(!this.is_halted)
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{
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const r = this.singleStep();
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if (r === StepResult.EXECUTED) continue;
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if (r === StepResult.HALTED) return this.output;
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if (r === StepResult.WAITING_FOR_IN) throw "not enough input";
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throw "unknown output of singleStep";
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}
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return this.output;
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}
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autoRun() : StepResult
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{
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while(!this.is_halted)
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{
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const r = this.singleStep();
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if (r === StepResult.EXECUTED) continue;
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if (r === StepResult.HALTED) return StepResult.HALTED;
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if (r === StepResult.WAITING_FOR_IN) return StepResult.WAITING_FOR_IN;
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throw "unknown output of singleStep";
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}
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return StepResult.HALTED;
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}
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singleStep() : StepResult
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{
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const cmd = new Op(this.program.r(this.instructionpointer));
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if (cmd.opcode == OpCode.ADD)
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{
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const p0 = cmd.getParameter(this, 0);
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const p1 = cmd.getParameter(this, 1);
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const pv = p0 + p1;
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cmd.setParameter(this, 2, pv);
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.MUL)
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{
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const p0 = cmd.getParameter(this, 0);
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const p1 = cmd.getParameter(this, 1);
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const pv = p0 * p1;
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cmd.setParameter(this, 2, pv);
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this.incInstrPtr(cmd);
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return StepResult.EXECUTED;
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}
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else if (cmd.opcode == OpCode.HALT)
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{
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this.is_halted = true;
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return StepResult.HALTED;
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}
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else if (cmd.opcode == OpCode.IN)
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|
{
|
|
if (this.inputqueue.length == 0) return StepResult.WAITING_FOR_IN;
|
|
|
|
const pv = this.inputqueue[0];
|
|
cmd.setParameter(this, 0, pv);
|
|
this.inputqueue = this.inputqueue.slice(1);
|
|
|
|
this.incInstrPtr(cmd);
|
|
return StepResult.EXECUTED;
|
|
}
|
|
else if (cmd.opcode == OpCode.OUT)
|
|
{
|
|
const p0 = cmd.getParameter(this, 0);
|
|
this.output.push(p0);
|
|
//AdventOfCode.outputConsole("# " + p0);
|
|
|
|
this.incInstrPtr(cmd);
|
|
|
|
return StepResult.EXECUTED;
|
|
}
|
|
else if (cmd.opcode == OpCode.TJMP)
|
|
{
|
|
const p0 = cmd.getParameter(this, 0);
|
|
if (p0 != 0) this.instructionpointer = cmd.getParameter(this, 1);
|
|
else this.incInstrPtr(cmd);
|
|
|
|
return StepResult.EXECUTED;
|
|
}
|
|
else if (cmd.opcode == OpCode.FJMP)
|
|
{
|
|
const p0 = cmd.getParameter(this, 0);
|
|
if (p0 == 0) this.instructionpointer = cmd.getParameter(this, 1);
|
|
else this.incInstrPtr(cmd);
|
|
|
|
return StepResult.EXECUTED;
|
|
}
|
|
else if (cmd.opcode == OpCode.LT)
|
|
{
|
|
const p0 = cmd.getParameter(this, 0);
|
|
const p1 = cmd.getParameter(this, 1);
|
|
const pv = p0 < p1 ? 1 : 0;
|
|
cmd.setParameter(this, 2, pv);
|
|
|
|
this.incInstrPtr(cmd);
|
|
return StepResult.EXECUTED;
|
|
}
|
|
else if (cmd.opcode == OpCode.EQ)
|
|
{
|
|
const p0 = cmd.getParameter(this, 0);
|
|
const p1 = cmd.getParameter(this, 1);
|
|
const pv = p0 == p1 ? 1 : 0;
|
|
cmd.setParameter(this, 2, pv);
|
|
|
|
this.incInstrPtr(cmd);
|
|
return StepResult.EXECUTED;
|
|
}
|
|
else if (cmd.opcode == OpCode.ARB)
|
|
{
|
|
const p0 = cmd.getParameter(this, 0);
|
|
this.relative_base = this.relative_base+p0;
|
|
|
|
this.incInstrPtr(cmd);
|
|
return StepResult.EXECUTED;
|
|
}
|
|
else throw "Unknown Op: " + cmd.opcode + " @ " + this.instructionpointer;
|
|
}
|
|
|
|
private incInstrPtr(cmd: Op)
|
|
{
|
|
this.instructionpointer += 1 + cmd.parametercount;
|
|
}
|
|
}
|
|
|
|
enum StepResult { EXECUTED, HALTED, WAITING_FOR_IN }
|
|
|
|
enum OpCode
|
|
{
|
|
ADD = 1,
|
|
MUL = 2,
|
|
IN = 3,
|
|
OUT = 4,
|
|
TJMP = 5,
|
|
FJMP = 6,
|
|
LT = 7,
|
|
EQ = 8,
|
|
ARB = 9,
|
|
HALT = 99,
|
|
}
|
|
|
|
enum ParamMode
|
|
{
|
|
POSITION_MODE = 0,
|
|
IMMEDIATE_MODE = 1,
|
|
RELATIVE_MODE = 2,
|
|
}
|
|
|
|
class Op
|
|
{
|
|
opcode: OpCode;
|
|
modes: ParamMode[];
|
|
|
|
name: string;
|
|
parametercount: number;
|
|
|
|
constructor(v: number)
|
|
{
|
|
this.opcode = v%100;
|
|
v = Math.floor(v/100);
|
|
this.modes = [];
|
|
for(let i=0; i<4; i++)
|
|
{
|
|
this.modes.push(v%10);
|
|
v = Math.floor(v/10);
|
|
}
|
|
|
|
if (this.opcode == OpCode.ADD) { this.name="ADD"; this.parametercount=3; }
|
|
else if (this.opcode == OpCode.MUL) { this.name="MUL"; this.parametercount=3; }
|
|
else if (this.opcode == OpCode.HALT) { this.name="HALT"; this.parametercount=0; }
|
|
else if (this.opcode == OpCode.IN) { this.name="IN"; this.parametercount=1; }
|
|
else if (this.opcode == OpCode.OUT) { this.name="OUT"; this.parametercount=1; }
|
|
else if (this.opcode == OpCode.TJMP) { this.name="TJMP"; this.parametercount=2; }
|
|
else if (this.opcode == OpCode.FJMP) { this.name="FJMP"; this.parametercount=2; }
|
|
else if (this.opcode == OpCode.LT) { this.name="LT"; this.parametercount=3; }
|
|
else if (this.opcode == OpCode.EQ) { this.name="EQ"; this.parametercount=3; }
|
|
else if (this.opcode == OpCode.ARB) { this.name="ARB"; this.parametercount=1; }
|
|
else throw "Unknown opcode: "+this.opcode;
|
|
}
|
|
|
|
getParameter(proc: Interpreter, index: number): number
|
|
{
|
|
const prog = proc.program;
|
|
const ip = proc.instructionpointer;
|
|
|
|
let p = prog.r(ip+1+index);
|
|
|
|
if (this.modes[index] == ParamMode.POSITION_MODE) p = prog.r(p);
|
|
else if (this.modes[index] == ParamMode.IMMEDIATE_MODE) p = p;
|
|
else if (this.modes[index] == ParamMode.RELATIVE_MODE) p = prog.r(proc.relative_base+p);
|
|
else throw "Unknown ParamMode: "+this.modes[index];
|
|
|
|
return p;
|
|
}
|
|
|
|
setParameter(proc: Interpreter, index: number, value: number): void
|
|
{
|
|
const prog = proc.program;
|
|
const ip = proc.instructionpointer;
|
|
|
|
let p = prog.r(ip+1+index);
|
|
|
|
if (this.modes[index] == ParamMode.POSITION_MODE) prog.w(p, value);
|
|
else if (this.modes[index] == ParamMode.IMMEDIATE_MODE) throw "Immediate mode not allowed in write";
|
|
else if (this.modes[index] == ParamMode.RELATIVE_MODE) prog.w(proc.relative_base+p, value);
|
|
else throw "Unknown ParamMode: "+this.modes[index];
|
|
}
|
|
}
|
|
|
|
class InfMem
|
|
{
|
|
private data: { [_:number]:number } = {};
|
|
|
|
constructor(v: number[])
|
|
{
|
|
for(let i=0; i<v.length;i++) this.data[i]=v[i];
|
|
}
|
|
|
|
r(pos: number): number
|
|
{
|
|
if (!(pos in this.data)) this.data[pos] = 0;
|
|
return this.data[pos];
|
|
}
|
|
|
|
w(pos: number, val: number): number
|
|
{
|
|
return this.data[pos] = val;
|
|
}
|
|
}
|
|
}
|
|
|