Cod sursa(job #1368217)

Utilizator GeorgianBaditaBadita Marin-Georgian GeorgianBadita Data 2 martie 2015 15:13:41
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.33 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
long expo(long a, long b)
{
    long x = 1;
    while(b)
    {
        if(b & 1 == 1)
            x *= a;
         b >>= 1;
         a *= a;
    }
    return x;
}
int main()
{
    int a, b;
    f >> a >> b;
    g << expo(a, b);
}