// n1850.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <iomanip>
#include <fstream>
#include <algorithm>
#include <cstdio>
#include <cmath>
#include <cstring>
#include <limits.h>
#include <deque>
#include <vector>
#include <queue>
#include <string>
#include <map>
#include <stack>
#include <set>
#include <unordered_map>
#include <unordered_set>

using namespace std;

int _2darray[1000][1000];
int n, m;
bool row(int r,int&_1st_x,int&_2nd_x, int& _1st_y, int& _2nd_y) {
    int _1st = 0, _2nd = 0;
    for (int i = 0; i < m; i++) {
        if (_2darray[r][i] != 0) {
            if (_1st == 0) {
                _1st = _2darray[r][i];
                _1st_x = r;
                _1st_y = i;
            }
            else
            {
                _2nd = _2da...