Cod sursa(job #1456288)

Utilizator rares22iunieDoroftei Rares rares22iunie Data 30 iunie 2015 11:55:00
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.35 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
const long long m= 1999999973;
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
int main()
{
    long n,p,i,a=1,x;
    fin>>n>>p;
    x=n;
    for(i=0;(1<<i)<=p;i++)
    {
        if((1<<i)&p)
            a=(a*x)%m;
        x=(x*x)%m;
    }
    fout<<a;
    return 0;
}