#include <stdio.h>

int main() {
    int n,m;
    scanf("%d %d",&n,&m);
    int num1[n][m];
    int num2[n][m];
    for (int i=0; i<n; i++) {
        for (int j=0; j<m; j++) {
            scanf("%d",&num1[i][j]);
        }
    }
    for (int i=0; i<n; i++) {
        for (int j=0; j<m; j++) {
            scanf("%d",&num2[i][j]);
        }
    }
    for (int i=0; i<n; i++) {
        for (int j=0; j<m; j++) {
            int n=num1[i][j]+num2[i][j];
            printf("%d ",n);
        }
        printf("\n");
    }
    return 0;
}

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