AoC2020/03-2-1.py

4 lines
131 B
Python
Raw Normal View History

2020-12-03 22:48:33 +00:00
d=list(open("/dev/stdin"))
2020-12-03 21:59:07 +00:00
def f(y,x=1):return sum(d[i][i*y//x%31]=='#' for i in range(0,323,x))
print(f(1)*f(3)*f(5)*f(7)*f(1,2))