Cod sursa(job #584235)

Utilizator informatician28Andrei Dinu informatician28 Data 24 aprilie 2011 18:53:19
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");
double x;
int n; 
double putere()
{
double p = 1 ;
while (n > 0)
{
if (n & 1) // n este impar
{
p *= x;
n-- ;
}
x = x * x ;
n >>= 1 ; // sau n = n / 2
}
return p;
} 
int main() 
{int a;
	f>>x>>n;
a=putere();
g<<a%1999999973;
return 0; 
}