Cod sursa(job #2283170)

Utilizator TooHappyMarchitan Teodor TooHappy Data 15 noiembrie 2018 01:37:15
Problema Stramosi Scor 80
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.72 kb
#include <bits/stdc++.h>
 
using namespace std;
 
ifstream in("stramosi.in");
ofstream out("stramosi.out");
 
const int NMax = 250005;
const int LMax = 20;
 
int v[NMax][LMax];
 
int main(){
    ios::sync_with_stdio(false); in.tie(0); out.tie(0);
    
    int n, m, p, node;
    in >> n >> m;

    for(int i = 1; i <= n; i++){
        in >> v[i][0];
    }

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

    for(int i = 1; i <= m; i++){
        in >> node >> p;

        for(int i = 0; i < LMax; i++){
            if((p >> i) % 2 == 1){
                node = v[node][i];
            }
        }
        out << node << "\n";
    }

    return 0;
}