import sys
input = sys.stdin.readline
n,m = map(int,input().split())
array_1 = [list(map(int,input().split())) for _ in range(n)]
array_2 = [list(map(int,input().split())) for _ in range(n)]
for i in range(n):
for j in range(m):
array_1[i][j] += array_2[i][j]
for i in range(n):
for j in range(m):
print(array_1[i][j] , end = ' ')
print()