Cod sursa(job #289637)

Utilizator andreirRoti Andrei andreir Data 26 martie 2009 21:17:00
Problema Ridicare la putere in timp logaritmic Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.32 kb
#include<fstream.h>
ifstream fin("lgput.in");
ofstream fout("lgput.out");
unsigned long int power(unsigned long int n,unsigned long int p)
{
	if(p==0)
		return 1;
	if(p&1)
		return power(n,p/2)*power(n,p/2);
	return n*power(n,p-1);
}
int main()
{
	unsigned long int n,p;
	fin>>n>>p;
	fout<<power(n,p);
	return 0;
}