Cod sursa(job #2534489)

Utilizator cyg_Alex_codegicianBarbu Alexandru cyg_Alex_codegician Data 30 ianuarie 2020 17:27:24
Problema Stramosi Scor 30
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.86 kb
#include <fstream>
#include <vector>
using namespace std;
ifstream fin ("stramosi.in");
ofstream fout ("stramosi.out");
const int nmax=250005;
int n,m,x,y;
vector <int> muchii[nmax];
bool viz[nmax],ok;
void dfs (int nod,int cnt)
{
    viz[nod]=true;
    if (cnt==y)
    {
        ok=true;
        fout << nod << '\n';
        return;
    }
    for (int i=0;i<muchii[nod].size();i++)
    {
        int vecin=muchii[nod][i];
        if (!viz[vecin])
        {
            dfs(vecin,cnt+1);
        }
    }
}
int main()
{
    fin >> n >> m;
    for (int i=1;i<=n;i++)
    {
        int tata;
        fin >> tata;
        if (tata!=0) muchii[i].push_back(tata);
    }
    for (int i=1;i<=m;i++)
    {
        fin >> x >> y;
        ok=false;
        dfs(x,0);
        if (ok==false) fout << 0 << '\n';
        for (int j=1;j<=n;j++)
        {
            viz[j]=false;
        }
    }
}