r,c=map(int,input().split())
a=[]
b=[]

for i in range(r):
    a.append([int(j) for j in input().split()])

for i in range(r):
    b.append([int(j) for j in input().split()])    

add=[[0 for i in range(c)] for i in range(r)]

for i in range(r):
    for j in range(c):
        add[i][j] = a[i][j]+b[i][j]

for i in range(r):
    for j in range(c):
        print(add[i][j],end=" ")
    print()