Cod sursa(job #2438181)

Utilizator AlexNeaguAlexandru AlexNeagu Data 11 iulie 2019 15:53:34
Problema Stramosi Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.56 kb
#include <fstream>
using namespace std;
ifstream cin("stramosi.in");
ofstream cout("stramosi.out");
int n, m, DP[20][300005];
int main()
{
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        cin >> DP[0][i];
    for (int i = 1; i <= n; i++)
         for (int  j = 1; j <= 20; j++)
              DP[j][i] = DP[j - 1][DP[j - 1][i]];
    while (m--)
    {
        int x, y;
        cin >> x >> y;
        for (int i = 20; i >= 0; i--)
            if (y & (1 << i))
            x = DP[i][x];
        cout << x << "\n";
    }
    return 0;
}