// editor3
#include<stdio.h>
#include<stdlib.>
#define MAX_SIZE 1001
int main()
{
    int row;
    int column;
    int dist;
    cell;
    cell queue [MAX_SIZE*MAX_SIZE];
    int front=0,rear=0;
    int drow[]=[-1,1,0,0]
    int dcol[]=[0,0,-1,1]
    int M,N;
    int grid[MAX_SIZE][MAX_SIZE];
    int visited[MAX_SIZE][MAX_SIZE];
}