#define _CRT_SECURE_NO_DEPRECATE
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#define MAXN 7300
#define MIN(x, y) ( ((x) < (y)) ? (x) : (y))


short int N, M, R, C, A[MAXN][MAXN];
int RSum[MAXN];

int main(){
	assert(freopen("elimin.in", "r", stdin));
	freopen("elimin.out", "w", stdout);

	scanf("%d %d %d %d", &M, &N, &R, &C);

	for (int i = 0; i < M; ++i)
		for (int j = 0; j < N; ++j)
			scanf("%d", &A[i][j]),
			RSum[j] += A[i][j];

	assert(MIN(M, N) < 32);

	return 0;
}