Cod sursa(job #867604)

Utilizator mitrutstrutMitrea Andrei Ionut mitrutstrut Data 29 ianuarie 2013 21:38:21
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.59 kb
#include <fstream>
using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int t[18][250001],logi[250001];
int main()
{
    int n,m,i,j,x,y;
    f>>n>>m;
    for(i=1;i<=n;i++)
    {
        f>>t[0][i];
    }
    for(i=1; (1<<i)<=n; i++)
        for(j=1;j<=n;j++)
            t[i][j]=t[i-1][t[i-1][j]];
     
    logi[1]=0;
    for(i=2;i<=n;i++)
        logi[i]=logi[i/2]+1;
    for(i=1;i<=m;i++)
    {
        f>>x>>y;
        while(y)
        {
            x=t[logi[y]][x];
            y=y-(1<<logi[y]);
        }
        g<<x<<'\n';
    }
}