题解 | #牛牛的矩阵相加#
牛牛的矩阵相加
https://www.nowcoder.com/practice/730b90507602412fac90a3f106bfa0cd
my_matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
factor = int(input())
for i in range(len(my_matrix)):
for j in range(len(my_matrix[0])):
my_matrix[i][j] *= factor
print(my_matrix)
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