Cod sursa(job #2386711)

Utilizator andreisontea01Andrei Sontea andreisontea01 Data 23 martie 2019 15:16:49
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.74 kb
#include <bits/stdc++.h>

using namespace std;

int tati[250005];
int dp[250005][30];

int main()
{
    ifstream fin("stramosi.in");
    ofstream fout("stramosi.out");
    int n, m;
    fin >> n >> m;
    for(int i = 1; i <= n; ++i){
        fin >> tati[i];
        dp[i][0] = tati[i];
    }
    for(int i = 1; i <= n; ++i){
        for(int j = 1; j <= 20; ++j)
            dp[i][j] = dp[dp[i][j - 1]][j - 1];
    }
    while(m){
        int x, y;
        fin >> x >> y;
        int curent = x;
        for(int p = 20; p >= 0; p--){
            if((1 << p) <= y){
                curent = dp[curent][p];
                y -= (1 << p);
            }
        }
        fout << curent << "\n";
        m--;
    }
    return 0;
}