Cod sursa(job #1577058)
| Utilizator | Data | 23 ianuarie 2016 11:00:40 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.44 kb |
#include <fstream>
#define W 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long exp_log(long long x, long long P);
long long n, p;
int main()
{
fin >> n >> p;
fout << exp_log(n, p);
return 0;
}
long long exp_log(long long x, long long P)
{
long long nr;
if (P == 1)
return x%W;
if (P % 2)
return x%W*exp_log(x, P - 1);
nr = exp_log(x, P / 2);
return nr*nr;
}