#include<iostream>
#include<math.h>
#define MAXX 1001
#define SCALAR 0.4

using namespace std;

double** DIFFERENCE(double **p, double **p2, int m, int n)
{
	double s = new(nothrow)int*[m];
	for (int i = 0; i < m; ++i)
		s[i] = new(nothrow)int[n];
	for (int i = 0; i < m; ++i)
		for (int j = 0; j < n; ++j)
			s[i][j] = p[i][j] - p2[i][j];
	return s;
}

int main()

{

	int m, n;
	cin >> m >> n;
	double** mat1 = READ(m, n);
	int m2, n2;
	cin >> m2 >> n2;
	double** mat2 = READ(m2, n2);
	int m3, n3;
	double** mat3 = DIFFERENCE(mat1, mat2, m, n);
	SHOW_MATRIX(mat3, m, n);

	system("pause");
	return 0;
}