Cod sursa(job #1915856)

Utilizator TibixbAndrei Tiberiu Tibixb Data 8 martie 2017 22:49:10
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.82 kb
#include<fstream>
#define NMAX 250000
using namespace std;
int n, m, x, p, q;
int d[18][NMAX];
ifstream _cin("stramosi.in");
ofstream _cout("stramosi.out");
int main()
{
    _cin >> n >> m;
    for(int i = 1; i <= n; i++)
    {
        _cin >> x;
        d[0][i] = x;
    }

    for(int i = 1; (1 << i) <= n; i++)
    {
        for(int j = 1; j <= n; j++)
        {
            p = d[i - 1][j];
            d[i][j] = d[i - 1][p];
        }
    }

    while(m--)
    {
        _cin >> q >> p;
        for(int i = 0; (1 << i) <= p; i++)
        {
            if(((1 << i) & p) > 0)
            {
                q = d[i][q];
                p ^= (1 << i);
            }
        }
        _cout << q << "\n";
    }
    return 0;
}