Cod sursa(job #3238160)

Utilizator BuruianaRaresAndreiBuruiana Rares Andrei BuruianaRaresAndrei Data 22 iulie 2024 13:51:00
Problema Stramosi Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.83 kb
#include <bits/stdc++.h>

#define int long long

#define pii pair<int, int>
#define fs first
#define sd second

using namespace std;

ifstream cin("stramosi.in");
ofstream cout("stramosi.out");

int str[250010][30];

void solve() {
   int n, m; cin >> n >> m;
   for(int i = 1; i <= n; i++) {
      int x; cin >> x;
      str[i][0] = x;
      for(int j = 1, k = 1; i > j; j <<= 1, k++)
         str[i][k] = str[str[i][k - 1]][k - 1];
   }
   while(m--) {
      int q, nr; cin >> q >> nr;
      for(int i = 20; i >= 0; i--) {
         if(nr >= 1 << i) {
            q = str[q][i];
            nr -= 1 << i;
         }
         if(nr == 0)
            break;
      }
      cout << q << '\n';
   }
}


signed main() {
   ios_base::sync_with_stdio(false);
   cin.tie(NULL);

   int t = 1; // cin >> t;
   while(t--) {
      solve();
   }

   return 0;
}