Cod sursa(job #1465030)

Utilizator AlexAnastasiuAlex Anastasiu AlexAnastasiu Data 26 iulie 2015 13:19:30
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.51 kb
#include <fstream>
#include <iostream>
#define p 1999999973
using namespace std;
long long pow(long long baza,long long exponent)
{
    if(exponent==0)
        return 1;
    else
    if(exponent%2==0)
    {
        return (pow(baza*baza,exponent/2)%p);
    }
    else
    {
        return (baza*pow(baza*baza,(exponent-1)/2)%p);
    }
}
int main()
{
    ifstream in ("lgput.in");
    ofstream out ("lgput.out");
    long long a,b,c=0;
    in>>a>>b;
    c=pow(a,b);
    out<<c%p;
    return 0;
}