4 lines
137 B
Python
4 lines
137 B
Python
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d=open("/dev/stdin").readlines()
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def f(y,x=1):return sum(d[i][i*y//x%31]=='#' for i in range(0,323,x))
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print(f(1)*f(3)*f(5)*f(7)*f(1,2))
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