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