Cod sursa(job #2306142)

Utilizator DariusDCDarius Capolna DariusDC Data 21 decembrie 2018 17:56:38
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.45 kb
#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("lgput.in");
ofstream fout("lgput.out");

double ridicarelaputere(double a,int b)
{
    double p = 1;
    while (b > 0)
    {
        if (b%2==1)
        {
            p *= a;
            b--;
        }
        a = a * a;
        b /= 2;
    }
    return p;
}

int main()
{
    int a, b;
    fin >>a >> b;
    fout << ridicarelaputere(a,b);
    return 0;
}