Cod sursa(job #2019785)

Utilizator oaspruOctavian Aspru oaspru Data 8 septembrie 2017 15:14:35
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.62 kb
#include <fstream>
#define DIM 250001
using namespace std;
ifstream fi("stramosi.in");
ofstream fo("stramosi.out");
int A[30][DIM];
int n,m;
int stramos(int q,int p)
{
    int rez=q;
    for(int i=30;i>=0;i--)
        if(p&(1<<i))
            rez=A[i][rez];
    return rez;
}
int main()
{
    fi>>n>>m;
    for(int i=1;i<=n;i++)
        fi>>A[0][i];
    for(int i=1;1<<i<=n;i++)
        for(int j=1;j<=n;j++)
            A[i][j]=A[i-1][A[i-1][j]];
    for(int i=1;i<=m;i++)
    {
        int q,p;
        fi>>q>>p;
        fo<<stramos(q,p)<<"\n";
    }
    fi.close();
    fo.close();
    return 0;
}