蟻本&POJから水たまりを数える問題： 2386 -- Lake Counting ナイーブに書くなら： import itertools as it def solve(map_): lakes = {(i, j):set((i,j)) for i, row in enumerate(map_) for j, v in enumerate(row) if v == 'W'} def neighbors(i, j): n = ((i+i2, j+j2) for i2, j2 in it.product((-1,0,1), repeat=2))…
