Cod sursa(job #1802979)

Utilizator amaliarebAmalia Rebegea amaliareb Data 10 noiembrie 2016 21:08:28
Problema Stramosi Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.64 kb
#include <iostream>
#include <fstream>

using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int n,m,i,j,t[250001][21],p,q,pas,x;

int main()
{
    f>>n>>m;
    for(i=1;i<=n;i++) f>>t[i][1];
    for(i=1;i<=n;i++)
    {
        for(j=2;j<=18;j++)
        {
            t[i][j]=t[t[i][j-1]][j-1];
        }
    }
    for(i=1;i<=m;i++)
    {
        f>>q>>p;
        pas=1;
        pas=18;
        while(pas)
        {
            if(1<<(pas-1)<=p)
            {
                q=t[q][pas];
                p-=pas;
            }
            pas--;
        }
        g<<q<<'\n';
    }
    return 0;
}