
A = []
B = []
n,m = map(int, input().split())
for i in range(n):
a = map(int, input().split())
A.append(list(a))
for j in range(n):
b = map(int, input().split())
B.append(list(b))
for i in range(n):
C = []
for j in range(m):
C.append(A[i][j] + B[i][j])
print(*C)