Cod sursa(job #1961228)

Utilizator TherevengerkingSurani Adrian Therevengerking Data 10 aprilie 2017 23:08:33
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.67 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("stramosi.in");
ofstream fout("stramosi.out");
const int Nmax=250000+5;
int n,m;
int f[Nmax],pr[20][Nmax];
int main()
{
    fin>>n>>m;
    fin.sync_with_stdio(false);
    fout.sync_with_stdio(false);
    for(int i=1;i<=n;++i)
    {
        fin>>f[i];
        pr[0][i]=f[i];
    }
    for(int pd=1;pd<=18;++pd)
        for(int i=1;i<=n;++i)
            pr[pd][i]=pr[pd-1][pr[pd-1][i]];
    for(int i=1,x,y,par;i<=m;++i)
    {
        fin>>x>>y;
        par=x;
        for(int j=0;j<=30;j++)
            if((1<<j) & y)par=pr[j][par];
        fout<<par<<'\n';
    }
    return 0;
}