Cod sursa(job #1006485)

Utilizator Emilia26Hangan Emilia Emilia26 Data 7 octombrie 2013 09:51:32
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.61 kb
#include <fstream>
using namespace std;

ifstream is("lgput.in");
ofstream os("lgput.out");

long long Putere(int n, int p);

int n, p;

int main()
{
    is >> n >> p;
    os << Putere(n ,p);// % 1999999973;

    is.close();
    os.close();
    return 0;
}

long long Putere(int n, int p)
{
    if ( p == 0 )
        return 1;
    if ( p == 1 )
        return n;
    long long res = Putere ( n, p / 2 );// % 1999999973;
    res *= res;
    res %= 1999999973;
    if ( p % 2 == 1 )
    {
        res *= n;
        res %= 1999999973;
    }

    return res;
}