Cod sursa(job #2308522)

Utilizator TheNextGenerationAyy LMAO TheNextGeneration Data 27 decembrie 2018 12:06:19
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.64 kb
#include <bits/stdc++.h>

using namespace std;
ifstream in("stramosi.in");
ofstream out("stramosi.out");
const int N = 250005;
const int L = 20;
int dp[L][N],lg[N];
int main()
{
    int n,m;
    in >> n >> m;
    for (int i = 2; i<=n; i++)
        lg[i] = lg[i/2]+1;
    for (int i = 1; i<=n; i++)
    {
        in >> dp[0][i];
        for (int j = 1; j<=lg[n]; j++)
            dp[j][i] = dp[j-1][dp[j-1][i]];
    }
    for (int i = 1; i<=m; i++)
    {
        int x,p;
        in >> x >> p;
        while (p)
        {
            x = dp[lg[p]][x];
            p = p-(1<<lg[p]);
        }
        out << x << "\n";
    }
}