include <stdio.h>

int main() {

int n, m, a[105][105], b[105][105], c[105][105];
scanf("%d%d", &n, &m);
for (int i = 0; i < n; i++) {
	for (int j = 0; j < m; j++) {
		scanf("%d", &a[i][j]);
	}
}
for (int i = 0; i < n; i++) {
	for (int j = 0; j < m; j++) {
		scanf("%d", &b[i][j]);
	}
}
for (int i = 0; i < n; i++) {
	for (int j = 0; j < m; j++) {
		c[i][j] = a[i][j] + b[i][j];
	}
}
for (int i = 0; i < n; i++) {
	for (int j = 0; j < m; j++) {
		printf("%d ", c[i][j]);
	}
	printf("\n");
}
return 0;

}