Cod sursa(job #850410)

Utilizator radascayoRadu Petre Dimulescu radascayo Data 8 ianuarie 2013 15:06:42
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.57 kb
#include<fstream>
using namespace std;

int a[21][250001],i,j,n,m,x,y;

int main()
{
    ifstream f("stramosi.in");
    ofstream g("stramosi.out");
    f >> n >> m;
    for (i=1;i<=n;i++)
        f >> a[0][i];
    for (j=1;j<=17;j++)
        for (i=1;i<=n;i++)
            a[j][i]=a[j-1][a[j-1][i]];
    for (i=1;i<=m;i++)
    {
        f >> x >> y;
        for (j=0;y>0;j++)
        {
            if ((y & (1 << j))>0)
            {
                x=a[j][x];
                y-=1 << j;
            }
        }
        g << x << "\n";
    }
    return 0;
}