Cod sursa(job #973883)

Utilizator gbi250Gabriela Moldovan gbi250 Data 15 iulie 2013 20:43:19
Problema Stramosi Scor 70
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.71 kb
#include <cstdio>
#include <vector>
#include <cstring>
#define dim 250001
using namespace std;
vector <int> v[dim];
int n, m, i, p, q, x, k;
bool viz[dim];
int dfs(int q)
{
    p--;
    for(int i=0;i<v[q].size();++i)
        if(viz[v[q][i]]!=k)
        {
            viz[v[q][i]]=k;
            if(p>=1)
                return dfs(v[q][i]);
            else return q;
        }
}
int main()
{
    freopen("stramosi.in", "r", stdin);
    freopen("stramosi.out", "w", stdout);
    scanf("%d %d", &n, &m);
    for(i=1;i<=n;i++)
    {
        scanf("%d", &x);
        v[i].push_back(x);
    }
    for(i=1;i<=m;i++)
    {
        scanf("%d %d", &q, &p);
        p++; k++;
        printf("%d\n", dfs(q));
    }
    return 0;
}