#include <bits/stdc++.h>
using namespace std;
int m, n;
int a[105][105], b[105][105], c[105][105];
int main()
{
    cin >> m >> n;
    for (int i = 1; i <= m; i++)
        for (int j = 1; j <= n; j++)
            cin >> a[i][j];
    for (int i = 1; i <= m; i++)
        for (int j = 1; j <= n; j++)
            cin >> b[i][j];
    for (int i = 1; i <= m; i++)
        for (int j = 1; j <= n; j++)
            c[i][j] = a[i][j] + b[i][j];
    for (int i = 1; i <= m; i++)
    {
        for (int j = 1; j <= n; j++)
            cout << c[i][j] << " ";
        cout << "\n";
    }
    return 0;
}