Cod sursa(job #3134249)

Utilizator tudor.pistolPistol Tudor tudor.pistol Data 28 mai 2023 20:01:00
Problema Stramosi Scor 50
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.69 kb
#include <fstream>
#include <cmath>
using namespace std;

ifstream fin("stramosi.in");
ofstream fout("stramosi.out");
int n, m, p, q, i, j;
int stramosi[22][250001];

int main()
{
    fin >> n >> m;
    
    for(int i = 1; i <= n; i++)
    {
        fin >> stramosi[1][i];
    }

    for (int j = 2; (1 << (j - 1)) <= n; j++)
           for (int i = 1; i <= n; i++)
               stramosi[j][i] = stramosi[j - 1][stramosi[j - 1][i]];

    for(int i = 0; i < m; i++)
    {
        fin >> q >> p;
        for (j = 1; j <= (int)log2(n); j++)
                if (p & (1 << (j - 1)))
                    q = stramosi[j][q];
        fout << q << endl;
    }
    
    fin.close();
    fout.close();
    return 0;
}