Cod sursa(job #1155932)

Utilizator TudorMTudor Moldovanu TudorM Data 27 martie 2014 12:04:32
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.35 kb
Raporteaza aceasta sursa 
#include<fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
int a,p;
int putere(int a, int n)
{
    int x;
    if(n==1)return a;
    if(n%2==1)return a*putere(a,n-1);
        x=putere(a,n/2);
        return x*x;
}
int main()
{
    f>>a>>p;
    g<<putere(a,p);
    f.close();
    g.close();
    return 0;
}