Cod sursa(job #977692)

Utilizator Corneliu10Dumitru Corneliu Corneliu10 Data 26 iulie 2013 13:53:30
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.62 kb
#include<fstream>
using namespace std;
 
ifstream fin("stramosi.in");
ofstream fout("stramosi.out");

int n, m, s[25][250010], p, q;
 
int main(){
    int i, j, step;
    fin >> n >> m;
    for(i=1; i<=n; ++i)
        fin >> s[0][i];
 
    for(i=1; (1<<i)<=n; ++i)
        for(j=1; j<=n; ++j){
            s[i][j] = s[i-1][s[i-1][j]];
        }
 
    for(i=0; i<m; ++i){
        fin >> q >> p;
        for(step=0; (1<<step)<=p; ++step) {
            if(((1<<step)&p) != 0)
                q = s[step][q];
        }
        fout << q << "\n";
    }
 
    fin.close();
    fout.close();
 
    return 0;
}