#include <stdio.h>
#include <assert.h>

#define MAXX 2000

int hike(int H, int W, int A[][MAXX]) {
    // insert your code here
    return 42;
}


int A[MAXX][MAXX];

int main() {
    FILE *fr, *fw;
    int H, W, i, j;

    fr = fopen("input.txt", "r");
    fw = fopen("output.txt", "w");
    assert(2 == fscanf(fr, "%d %d", &H, &W));
    for(i=0; i<H; i++)
        for(j=0; j<W; j++)
            assert(1 == fscanf(fr, "%d", &A[i][j]));

    fprintf(fw, "%d\n", hike(H, W, A));
    fclose(fr);
    fclose(fw);
    return 0;
}