Cod sursa(job #1649452)

Utilizator adu18sptAndrei Mircea adu18spt Data 11 martie 2016 13:42:21
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.41 kb
#include<fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
unsigned n,p,rez;
const long long MOD=1999999973;

unsigned put(unsigned a,unsigned b)
{
	unsigned r=1;
	
	while(b>1)
	{
		if(b%2==0)
		{
			a=(a*a)%MOD;
			b/=2;
		}
		else
		{
			r=(r*a)%MOD;
			b--;
		}
	}
	return (a*r)%MOD;
}

int main()
{
	fin>>n>>p;
	rez=put(n,p);
	fout<<rez;
	return 0;
}