i=1
num=input().split()
l =int(num[1])
r =int(num[0])
num2=[]
while i<=2*l:
num2.append(input().split())
i=i+1
num3=[]
for a in range(0,l):
num3.append(int(num2[a][0]) + int(num2[a + l][0]))
for b in range(1,r):
num3.append(int(num2[a][b]) + int(num2[a + l][b]))
d=1
for c in num3:
if d%r!=0:
print(c,end=' ')
else:
print(c)
d+=1
