Cod sursa(job #2067795)
| Utilizator | Data | 16 noiembrie 2017 20:35:25 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.42 kb |
#include <fstream>
std :: ifstream cin("lgput.in");
std :: ofstream cout("lgput.out");
int N, P;
void logaritmExpo(int n, int p){
if(p < 0){
logaritmExpo(1 / n, -p);
} else if(p == 0){
cout << 1;
} else if(p == 1){
cout << n;
} else if(p % 2 == 0){
logaritmExpo(n * n, p/2);
} else if(p % 2 == 1){
logaritmExpo(n * n, (p - 1)/2);
}
}
int main(){
cin >> N >> P;
logaritmExpo(N, P);
return 0;
}