Cod sursa(job #2496607)

Utilizator ElektrykT E S L A P E F E L I E Elektryk Data 21 noiembrie 2019 10:17:08
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.69 kb
#include <fstream>

using namespace std;

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

int n, m;

int stramosi[20][250007];

int q, p;

int main()
{
    in >> n >> m;
    for ( register int i = 1 ; i <= n ; ++i )
        in >> stramosi[0][i];
    for ( register int i = 1 ; i <= 19 ; ++i )
        for ( register int j = 1; j <= n ; ++j )
            stramosi[i][j] = stramosi[i-1][stramosi[i-1][j]];
    for ( register int querry = 1 ; querry <= m ; ++querry )
    {
        in >> q >> p;
        for ( register int i = 0 ; (1<<i) <= p ; ++i )
            if ( (1<<i)&p )
                q = stramosi[i][q];
        out << q << '\n';
    }
    return 0;
}