Cod sursa(job #1291940)

Utilizator adi_ispas95FMI - Adrian Ispas adi_ispas95 Data 13 decembrie 2014 15:17:11
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.45 kb
#include <iostream>
#include <fstream>

using namespace std;

ifstream f ("lgput.in");
ofstream g ("lgput.out");

const int n_max = 10001;
const int m = 1999999973;

int main()
{
    unsigned int i, n, p;
    long long a, sol = 1;

    f >> n >> p;

    a = n;

    for (i = 0; (1<<i) <= p; ++ i)
    {
        if ( ((1<<i) & p) > 0)
            sol= (sol * a) % m;

        a=(a * a) % m;
    }

    g << sol;

    return 0;
}