Cod sursa(job #904846)
| Utilizator | Data | 4 martie 2013 21:37:14 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.43 kb |
#include <fstream>
#define R9 1999999973
using namespace std;
long long a, b;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long putere(long long a, long long b) {
long long r = 1;
while (b != 0) {
if (b % 2 == 1)
r = (r * a) % R9;
a = (a * a) % R9;
b /= 2;
}
return r;
}
int main() {
fin >> a >> b;
fout << putere(a, b);
return 0;
}
