37 lines
518 B
Python
37 lines
518 B
Python
|
#!/usr/bin/env python3
|
||
|
|
|
||
|
|
import aoc
|
||
|
|
import math
|
||
|
|
|
||
|
|
|
||
|
|
# https://stackoverflow.com/questions/10094745
|
||
|
|
def spiralpos(n):
|
||
|
|
k = math.ceil((math.sqrt(n) - 1) / 2)
|
||
|
|
t = 2 * k + 1
|
||
|
|
m = t ** 2
|
||
|
|
|
||
|
|
t -= 1
|
||
|
|
|
||
|
|
if n >= m - t:
|
||
|
|
return k - (m - n), -k
|
||
|
|
|
||
|
|
m -= t
|
||
|
|
|
||
|
|
if n >= m - t:
|
||
|
|
return -k, -k + (m - n)
|
||
|
|
|
||
|
|
m -= t
|
||
|
|
|
||
|
|
if n >= m - t:
|
||
|
|
return -k + (m - n), k
|
||
|
|
|
||
|
|
return k, k - (m - n - t)
|
||
|
|
|
||
|
|
|
||
|
|
rawinput = aoc.read_input(3)
|
||
|
|
intinput = int(rawinput)
|
||
|
|
|
||
|
|
x, y = spiralpos(intinput)
|
||
|
|
|
||
|
|
print(abs(x) + abs(y))
|