题解 | 牛牛的矩阵相加
牛牛的矩阵相加
https://www.nowcoder.com/practice/730b90507602412fac90a3f106bfa0cd
import sys
list1 = [[1,2,3],[4,5,6],[7,8,9]]
multi_number = int(input())
for i in range(0,len(list1)):
for j in range(0,len(list1[i])):
list1[i][j] = list1[i][j]*multi_number
print(list1)
