Cod sursa(job #2766357)

Utilizator BalasaRaduBalasa Radu BalasaRadu Data 31 iulie 2021 20:07:54
Problema Stramosi Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.78 kb
#include <bits/stdc++.h>
using namespace std;

ifstream fin ("stramosi.in");
ofstream fout("stramosi.out");

const int dim=250009;

int n,m;
int rmq[40][dim];

void generare(){
    int ct=1;
    for(int ex=1;ex*2<=n;ex++){
        for(int i=1;i<=n;i++)
            rmq[ct][i]=rmq[ct-1][rmq[ct-1][i]];
        ct++;
    }
}

int Query(int q,int p){
    int stramos=q,ct=0;
    while(p){
        if(p%2==1){
            stramos=rmq[ct][stramos];
        }
        p/=2;
        ct++;
    }
    return stramos;
}

signed main(){
        fin>>n>>m;
    for(int i=1;i<=n;i++){
        int x;
        fin>>x;
        rmq[0][i]=x;
    }
    generare();
    for(int i=1;i<=m;i++){
        int p,q;
        fin>>q>>p;
        fout<<Query(q,p)<<'\n';
    }
}