Cod sursa(job #3183117)

Utilizator PetraPetra Hedesiu Petra Data 10 decembrie 2023 18:24:21
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.74 kb
#include <iostream>
#include <fstream>

using namespace std;

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

const int NMAX = 250002;
int n, m, dp[19][NMAX];

void citire()
{
    fin >> n >> m;
    for (int j = 1; j <= n; j++)
        fin >> dp[0][j];
}

int main()
{
    citire();

    for (int i = 1; i <= 17; i++)
        for (int j = 1; j <= n; j++)
            dp[i][j] = dp[i-1][dp[i-1][j]];

    for (int k = 1; k <= m; k++)
    {
        int q, p;
        fin >> q >> p;
        for (int i = 17; i >= 0; i--)
        {
            if((1<<i) <= p)
            {
                q = dp[i][q];
                p = p - (1<<i);
            }
        }
        fout << q << "\n";
    }
    return 0;
}