闘本 1.8 ゼロの行列

提出

code: txt

# m = 3, n = 4

# [

# ]

def to_zero(m, n, matrix):

x = set()

y = set()

for i in range(m):

for j in range(n):

x.add(i)

y.add(j)

for i in range(m):

for j in range(n):

if i in x or j in y:

return matrix