51 lines
1.3 KiB
Plaintext
51 lines
1.3 KiB
Plaintext
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<Query Kind="Program" />
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void Main()
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{
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var input = File.ReadAllLines(Path.Combine(Path.GetDirectoryName(Util.CurrentQueryPath), @"22_input.txt"));
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var depth = long.Parse(input[0].Split(' ')[1]);
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(long x, long y) target = ( long.Parse(input[1].Split(' ')[1].Split(',')[0]), long.Parse(input[1].Split(' ')[1].Split(',')[1]) );
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long[,] map = new long[target.x + 1, target.y + 1]; // erosion_level
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for (long xx = 0; xx <= target.x; xx++) map[xx, 0] = ((xx * 16807) + depth) % 20183;
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for (long yy = 0; yy <= target.y; yy++) map[0, yy] = ((yy * 48271) + depth) % 20183;
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for (long x = 1; x <= target.x; x++)
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{
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for (long y = 1; y <= target.y; y++)
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{
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map[x, y] = ((map[x-1, y] * map[x, y-1]) + depth) % 20183;
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}
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}
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long risk = 0;
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for (long x = 0; x <= target.x; x++)
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{
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for (long y = 0; y <= target.y; y++)
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{
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if (x == 0 && y == 0) continue;
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if (x == target.x && y == target.y) continue;
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risk += map[x,y] % 3;
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}
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}
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risk.Dump();
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//StringBuilder b = new StringBuilder();
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//for (long y = 0; y <= target.y; y++)
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//{
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// for (long x = 0; x <= target.x; x++)
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// {
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// if (map[x, y] % 3 == 0) b.Append('.');
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// if (map[x, y] % 3 == 1) b.Append('=');
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// if (map[x, y] % 3 == 2) b.Append('|');
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// }
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// b.AppendLine();
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//}
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//b.ToString().Dump();
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}
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// Define other methods and classes here
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