Cod sursa(job #1647103)

Utilizator mateidanutDanut Gabriel Matei mateidanut Data 10 martie 2016 19:02:27
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.31 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;

long long a, p, x, k;
const int mod=1999999973;

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

int main()
{   f>>x>>k;
    a=1;
    for (p=1; p<=k; p=p*2)
    {   if (k&p)
            a=(a*x)%mod;
        x=(x*x)%mod;
    }
    g<<a;
    return 0;
}