#2738 - python

N,M = map(int,input().split())
aa = []
bb = []
cc = []

for i in range (N):
    a = list(map(int, input().split()))
    aa.append(a)

for i in range (N):
    b = list(map(int, input().split()))
    bb.append(b)


for i in range (N):
    row = []
    for j in range (M):
        row.append(aa[i][j] + bb[i][j])
    cc.append(row)

for row in cc:
    print(' '.join(map(str, row)))