Cod sursa(job #1597989)
| Utilizator | Data | 12 februarie 2016 15:31:11 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.53 kb |
#include <iostream>
#include <fstream>
using namespace std;
long lgexp(int x, int n) {
long result;
if(n == 1)
return x;
else if(n==0)
return 1;
result = lgexp(x, n/2);
result = result*result;
if(n%2==0) {
return result;
}
else {
return x*result;
}
}
int main()
{
ifstream fin("lgexp.in");
ofstream fout("lgexp.out");
int x, n;
fin>>x>>n;
fin.close();
fout<<lgexp(x, n);
fout.close();
return 0;
}
