Cod sursa(job #1043166)

Utilizator uagamagaMatei Rogoz uagamaga Data 28 noiembrie 2013 04:12:46
Problema Stramosi Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.61 kb
#include <fstream>
#include <math.h>
using namespace std;

#define NMAX 250001
#define LOGNMAX 18

ifstream fin("stramosi.in");
ofstream fout("stramosi.out");

int ancestors[NMAX][LOGNMAX],m,n,p,q;


int main()
{
    int i,j;
    fin>>n>>m;

    for(i=1;i<=n;i++)
        fin>>ancestors[i][0];

    int height = 1;

    while(pow(2,height) < n)
    {
        for(int i=1;i<=n;i++)
            ancestors[i][height]=ancestors[ancestors[i][height-1]][0];
        height++;
    }

    while(m--)
    {

        fin>>q>>p;

        fout<<ancestors[q][p-1]<<"\n";


    }

    return 0;
}