为什莫？？

a,b=map(int,input().split())
s=[]
s1=[]
for i in range(a):
n=list(map(int,input().split()))
s.append(n)
for i in range(a):
n=list(map(int,input().split()))
s1.append(n)
sum=0
for i in range(a):
for j in range(b):
print(s[i][j]+s1[i][j],end="")