Cod sursa(job #1817452)

Utilizator GeoeyMexicanuBadita George GeoeyMexicanu Data 27 noiembrie 2016 20:43:48
Problema Ridicare la putere in timp logaritmic Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.45 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
int x,n;
int f(int x,int n)
{
    if(n<0)
        return f(1/x,(-1)*n);
    else
        if(n==0)
        return 1;
    else
        if(n==1)
        return x;
    else
        if(n%2==0)
        return f(x*x,n/2);
    else
        if(n%2!=0)
        return f(x*x,(n-1)/2);
}
int main()
{
    f>>x>>n;
    g<<f(x,n);
}