Cod sursa(job #1336560)
| Utilizator | Data | 7 februarie 2015 22:11:45 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.44 kb |
#include <fstream>
#define MOD 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long int putere(int x,int n);
int main()
{
long long int x,n;
fin>>x>>n;
fout<<putere(x,n)%MOD<<'\n';
return 0;
}
long long int putere(int x,int n)
{
if (!n) return 1;
if (n==1) return x%MOD;
if (n%2==0) return putere(x*x,n/2)%MOD;
else return (x*putere(x*x,(n-1)/2))%MOD;
}
