Cod sursa(job #2566895)
| Utilizator | Data | 3 martie 2020 13:46:48 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva educationala | Marime | 0.46 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
int exp(int x, int n)
{
if(n < 0)
return exp(1 / x, -n);
if(n == 0)
return 1;
if(n == 1)
return x;
if(n % 2 == 0)
return exp(x * x, n / 2);
if(n % 2 == 1)
return x * exp(x * x, (n - 1) / 2);
}
int main()
{
int n, p;
fin >> n >> p;
fout << exp(n, p);
return 0;
}
