Cod sursa(job #1469782)
| Utilizator | Data | 9 august 2015 16:07:42 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.41 kb |
#include<fstream>
#include<math.h>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long exponent(long x,long n)
{if(n<0)
return exponent(1/x,-n);
if(n==0) return 1;
if(n==1) return x;
if(n%2==0) return exponent(x*x,x/2);
if(n%2==1) return exponent(x*x,(n-1)/2);
}
int main()
{
long r,x,n;
fin>>x>>n;
r=exponent(x,n);
fout<<r%1999999973;
return 0;
}
