while 1:
 a,b=[],[]
 while 1:
  *c,=map(int,input().split());d=len(c)//2;a+=[c[:d]];b+=[c[d:]]
  if len(a)==d:[print(*[sum(map(int.__mul__,d,e))for e in zip(*b)])for d in a];input('\n');break