Cod sursa(job #1856775)

Utilizator bt.panteaPantea Beniamin bt.pantea Data 25 ianuarie 2017 13:57:18
Problema Stramosi Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.56 kb
#include <iostream>
#include <fstream>
#include <cmath>
using namespace std;
ifstream f ("stramosi.in");
ofstream g ("stramosi.out");
int r[300000];
int n,m, a[300000][50],q,p;
int main()
{
    f>>n>>m;
    for (int i=1;i<=n;i++)
        f>>a[i][0];
    for (int j=1;(1<<j)<=n;j++)
        for (int i=1;i<=n;i++)
            a[i][j]= a[a[i][j-1]][j-1];
    for (int i=1;i<=m;i++)
    {
        f>>q>>p;
        for (int i = 0; (1<<i) <= p; i++)
            if ((1<<i) & p)
                q = a[q][i];
        g<< q<<'\n';
    }
    return 0;
}