spaghett

#include <iostream>
#include <fstream>
#include <vector>
#include <tuple>
using namespace std;

int main()
{
    ifstream fin("schior.in");
    ofstream fout("schior.out");
    int maxx,maxy,startx,starty;
    fin>>maxy;fin>>maxx;
    fin>>starty;fin>>startx;
    int harta[maxx][maxy];
    bool checked[maxx][maxy];
    for(int y=0;y<maxy;y++)
    {
        for(int x=0;x<maxx;x++)
        {
            fin>>harta[x][y];
            checked[x][y]=false;
        }
    }
    vector<tuple<int,int,int>> last,curr;
    last.push_back(make_tuple(harta[startx-1][starty-1],startx-1,starty-1));
    while(!last.empty())
    {
        //push_heap(last.begin(),last.end());
        curr.clear();
        for(auto i : last)
        {
            int alti=get<0>(i), x=get<1>(i), y=get<2>(i);
            checked[x][y]=true;
            if(x>0){
                if(y>0)
                {
                    if(!checked[x-1][y-1]&&harta[x-1][y-1]<=alti){
                        curr.push_back(make_tuple(harta[x-1][y-1],x-1,y-1));
                    }
                }
                if(!checked[x-1][y]&&harta[x-1][y]<=alti){
                        curr.push_back(make_tuple(harta[x-1][y],x-1,y));
                    }
                if(y<maxy-1)
                {
                    if(!checked[x-1][y+1]&&harta[x-1][y+1]<=alti){
                        curr.push_back(make_tuple(harta[x-1][y+1],x-1,y+1));
                    }
                }
            }
            if(x<maxx-1){
                if(y>0)
                {
                    if(!checked[x+1][y-1]&&harta[x+1][y-1]<=alti){
                        curr.push_back(make_tuple(harta[x+1][y-1],x+1,y-1));
                    }
                }
                if(!checked[x+1][y]&&harta[x+1][y]<=alti){
                        curr.push_back(make_tuple(harta[x+1][y],x+1,y));
                    }
                if(y<maxy-1)
                {
                    if(!checked[x+1][y+1]&&harta[x+1][y+1]<=alti){
                        curr.push_back(make_tuple(harta[x+1][y+1],x+1,y+1));
                    }
                }
            }
            if(y>0){
                    if(!checked[x][y-1]&&harta[x][y-1]<=alti){
                        curr.push_back(make_tuple(harta[x][y-1],x,y-1));
                    }
            }
            if(y<maxy-1){
                    if(!checked[x][y+1]&&harta[x][y+1]<=alti){
                        curr.push_back(make_tuple(harta[x][y+1],x,y+1));
                    }
                }
        }
        last=curr;
    }
    //cout<<get<0>(last[0])<<"X: "<<get<1>(last[0])<<" Y: "<<get<2>(last[0]);
    fout<<get<0>(last[0]);
    return 0;
}