Cod sursa(job #2641439)

Utilizator OvidRata Ovidiu Ovid Data 11 august 2020 13:41:56
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.96 kb
#include<bits/stdc++.h>
using namespace std;
#define INIT  ios_base :: sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define mp make_pair
#define pb push_back
#define ft first
#define sc second
#define ll long long
#define pii pair<int, int>
#define count_bits __builtin_popcount
#define int ll


ifstream fin("stramosi.in");ofstream fout("stramosi.out");
#define cin fin
#define cout fout

int t, n, m;
int a[20][250010];

int32_t main(){
INIT
cin>>n>>m;
for(int i=1; i<=n; i++){
    cin>>a[0][i];
}
for(int j=1; j<=19; j++){
    for(int i=1; i<=n; i++){
        a[j][i]=a[j-1][a[j-1][i]];
    }
}

while(m--){
    int p, q;
    cin>>q>>p;
    while(p>0){
        for(int j=0; j<=19; j++){
            if(p<(((int)1)<<j) ){
                q=a[j-1][q]; p-=(((int)1)<<(j-1) ); break;
            }
        }
    }
    cout<<q<<"\n";
}





return 0;
}