Cod sursa(job #951744)

Utilizator Stefanescu_MihaiStefanescu Mihai-Nicolae Stefanescu_Mihai Data 21 mai 2013 16:16:18
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.4 kb
#include <fstream>
using namespace std;
long long exp(long long n, long long e)
{
    int rez;
    if (e<=1)
        return n;
    rez=exp(n,e>>1);
    rez*=rez;
    if (e&1)
        rez*=n;
    return rez;

}
int main()
{
    long long n,p;
    ifstream f1("lgput.in");
    ofstream f2("lgput.out");
    f1>>n>>p;
    f2<<exp(n,p);
    f1.close();
    f2.close();
    return 0;
}