Cod sursa(job #3337644)

Utilizator horatiu.avramAvram Popa Cristian Horatiu horatiu.avram Data 29 ianuarie 2026 11:40:40
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.68 kb
//e binary lifting penal
#include<bits/stdc++.h>

using namespace std;

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

const int MAXN=25e4;
const int MAXLOG=20;

int up[MAXN+1][MAXLOG+1];

int main() {
    int n,q;
    fin>>n>>q;
    for(int i=1; i<=n; i++) {
        fin>>up[i][0];
    }

    for(int i=1; i<=n; i++) {
        for(int j=1; j<=MAXLOG; j++) {
            up[i][j]=up[up[i][j-1]][j-1];
        }
    }

    while(q--) {
        int nd,k;
        fin>>nd>>k;
        for(int i=MAXLOG; i>=0; i--) {
            if(k&(1<<i)){
                nd=up[nd][i];
            }
        }
        fout<<nd<<'\n';
    }

    return 0;
}