[C++]Traseu hot

//Intr-o cladire este plasat un hot. Sa se afiseze toate posibilatite de iesire. El se poate deplasa in toate cele 8 directii.

#include<iostream>
#include<fstream>

using namespace std;


ifstream f("cladire.in");

const int x[]={1, 1, 0,-1,-1,-1,0,1};
const int y[]={0,-1,-1,-1, 0, 1,1,1};
int a[10][10], b[10][10], i, j, n, sol, js, jp, is, ip;

void citire()
{
    f>>n;
    for(i=1; i<=n; i++)
        for(j=1; j<=n; j++)
            f>>a[i][j];
}

void afis()
{
    sol++;
    cout<<"Solutia nr. "<<sol<<'\n';
    cout<<'\n';
    int i,j;
    for(i=1; i<=n; i++)
    {
        for(j=1; j<=n; j++)
            cout<<b[i][j]<<" ";
        cout<<"\n";
    }
    cout<<"\n";
}

void back(int i, int j, int pas)
{
    int ii, jj, k;
    for(k=0; k<=7; k++)
    {
        ii=i+x[k];
        jj=j+y[k];
        if(ii>=1 && ii<=n && jj>=1 && jj<=n)
            if(a[ii][jj]==1 && b[ii][jj]==0)
            {
                b[ii][jj]=pas;
                if(ii==1 || ii==n && jj==1 || jj==n) afis();
                else back(ii,jj,pas+1);
                b[ii][jj]=0;
            }
    }
}

int main()
{
    citire();
    for(i=1; i<=n; i++)
        for(j=1; j<=n; j++) b[i][j]=0;
    cout<<"Pozitia hot: ";
    cout<<"* Linie plecare: "; cin>>ip;
    cout<<"* Coloana plecare: "; cin>>jp;
    sol=0;
    b[ip][jp]=1;
    back(ip, jp, 2);
    return 0;
}