Cod sursa(job #1470563)

Utilizator andreiudilaUdila Andrei andreiudila Data 11 august 2015 17:32:00
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.45 kb
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long n,p;
long long pow(long long a, long long b)
{
    long long rez=1;
    while(b>0)
    {
        if(b%2==0)
        {
            a=a*a;
            b=b/2;
        }
        else
        {
            rez=rez*a;
            b--;
        }
    }
    return rez;
}

int main()
{
    fin>>n>>p;
    fout<<pow(n,p);
    return 0;
}