Cod sursa(job #1254767)

Utilizator alexb97Alexandru Buhai alexb97 Data 3 noiembrie 2014 14:02:22
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.4 kb
#include <fstream>
#define MOD 1999999973
using namespace std;

ifstream is("lgput.in");
ofstream os("lgput.out");

int n, p;

int Lgput(long long x,long long n);

int main()
{
	is >> n >> p;
	os << Lgput(n, p);
	is.close();
	os.close();
	return 0;
}

int Lgput(long long x, long long n)
{
	if(n == 1)
		return x;
	long long r = Lgput(x, n/2);
	r = r * r % MOD;
	if(n & 1)
	{
		r *= x;
		r %= MOD;
	}
	return r;
}