Cod sursa(job #2074659)

Utilizator lonca.sorin01Lonca Sorin lonca.sorin01 Data 24 noiembrie 2017 21:04:08
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.43 kb
#include <iostream>
#include <fstream>

using namespace std;

ifstream f("lgput.in");
ofstream g("lgput.out");

int lgput(int a, int b)
{
    if (b == 0)
    {
        return 1;
    }
    if (b == 1)
    {
        return a;
    }
    if (b % 2 == 1)
    {
        return a*lgput(a, b - 1);
    }
    return lgput(a * a, b / 2);
}

int main()
{
    int a, b;
    f>>a>>b;
    g<<lgput(a, b);
    return 0;
}