Cod sursa(job #2030122)
| Utilizator | Data | 1 octombrie 2017 09:59:58 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.45 kb |
#include <fstream>
#define REST 1999999973
using namespace std;
ifstream fin ("lgput.in");
ofstream fout ("lgput.out");
unsigned int x, p;
int lgput (int x, int p) {
if (x == 0)
return 0;
if (p == 1)
return x % REST;
if (p % 2) {
return x * lgput (x * x % REST, (p - 1) / 2) % REST;
}
return lgput (x * x % REST, p / 2) % REST;
}
int main () {
fin >> x >> p;
fout << lgput (x, p);
}
