n,m = map(int,input().split()) a = [] for i in range(n): a.append(list(map(int,input().split()))) b = [] for i in range(n): b.append(list(map(int,input().split()))) c = [] for i in range(n): lst = [] for j in range(m): lst.append(a[i][j]+b[i][j]) c.append(lst) for i in c: for j in i: print(j,end = ' ') print()