Cod sursa(job #544939)

Utilizator BitOneSAlexandru BitOne Data 2 martie 2011 14:34:54
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.41 kb
#include <fstream>
#include <cstdlib>
#define MODULO 1999999973

using namespace std;
inline int _pow( int x, int n )
{
	int r=1;
	for( ; n; n>>=1 )
	{
		if( n&1 )
		{
			r=(1LL*r*x)%MODULO;
			--n;
		}
		x=(1LL*x*x)%MODULO;
	}
	return r;
}
int main( void )
{
	int x, n;
	ifstream in( "lgput.in" );
	in>>x>>n;
	ofstream out( "lgput.out" );
	out<<_pow( x, n )<<'\n';
	return EXIT_SUCCESS;
}