#include<iostream>
using namespace std;

int a[55][55], b[55][55];

int main()
{
	int n, m;
	cin >> n >> m; // n行m列
	for (int i = 1; i <= n; i++)
		for (int j = 1; j <= m; j++)
			cin >> a[i][j];
	
	for (int i = 1; i <= n; i++)
		for (int j = 1; j <= m; j++)
			cin >> b[i][j];
	
	for (int i = 1; i <= n; i++)
	{
		for (int j = 1; j <= m; j++)
			cout << a[i][j] + b[i][j] << " ";
		cout << endl;
	}
		
	return 0;
}