Cod sursa(job #1469785)
Utilizator | Data | 9 august 2015 16:19:51 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.41 kb |
#include<fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long exponent(long long x,long 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%1999999973,x/2);
if(n%2==1) return (exponent(x,n-1)*x)%1999999973;
}
int main()
{
long long x,n;
fin>>x>>n;
fout<<exponent(x,n);
return 0;
}