Cod sursa(job #3297609)

Utilizator Dv1de2906Barbu David Dv1de2906 Data 22 mai 2025 23:52:10
Problema Stramosi Scor 90
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.68 kb
// #include <iostream>
#include <fstream>
// #include <vector>

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

int N,M,P,Q, up[250001][18];

int main(){
    fin >> N >> M;

    for ( int i = 1; i <= N; i++ ){
        fin >> up[i][0];
    }

    for ( int i = 1; i < 18; i++ ){ 
        for ( int node = 1; node <= N; node++ ){
            up[node][i] = up[up[node][i-1]][i-1];
        }
    }

    while(M--){
        fin >> Q >> P;
        int p = 0;

        while(P){
            if ( 1 & P ){
                Q = up[Q][p];
            }
            P >>= 1;
            p++;
        }
        fout << Q << '\n';
    }

    return 0;
}