Cod sursa(job #3231469)
| Utilizator | Data | 26 mai 2024 18:17:54 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva educationala | Marime | 0.62 kb |
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
unsigned int modExp(unsigned int x, unsigned int n, unsigned int q)
{
unsigned int b = x % q;
unsigned int r = 1;
if (n != 0)
{
while (n > 0)
{
if (n % 2)
{
r = (r * b) % q;
}
b = (b * b) % q;
n /= 2;
}
}
return r;
}
int main()
{
unsigned int x, n, q = 1999999973;
fin >> x >> n;
fout << modExp(x, n, q);
fin.close();
fout.close();
return 0;
}