Cod sursa(job #1512259)
| Utilizator | Data | 27 octombrie 2015 20:43:29 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.48 kb |
#include <iostream>
#include <fstream>
long long int pow_log(int x, int n)
{
if (n == 1)
return x;
if (n == 0)
return 1;
if (n % 2 == 0)
return pow_log(x * x, n / 2);
return x * pow_log(x * x, (n - 1) / 2);
}
int main()
{
int number, power;
std::ifstream in("lgput.in");
std::ofstream out("lgput.out");
in >> number;
in >> power;
out << pow_log(number, power) << std::endl;
in.close();
out.close();
return 0;
}
