Cod sursa(job #968448)

Utilizator rekingCretu Bogdan reking Data 2 iulie 2013 03:28:44
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.45 kb
#include <iostream>
#include <fstream>
#define MOD 1999999973
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
long long n,p;
long long powmodulo ()
{
    long long b=1;
    while (p)
    {
        if ((p&1))
        {
            b=((b%MOD)*(n%MOD))%MOD;
            p--;
        }
        n=((n%MOD)*(n%MOD))%MOD;
        p=(p>>1);
    }
    return b*1LL;
}
int main ()
{
    f>>n>>p;
    g<<1LL*powmodulo();
}