Cod sursa(job #2962986)
Utilizator | Data | 9 ianuarie 2023 22:21:29 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.38 kb |
#include <fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
int exponentiation(int a, int b){
if(b==1)
return a;
if(b%2==1)
return a*exponentiation(a, b-1);
int tmp_exp = exponentiation(a, b/2);
return tmp_exp * tmp_exp;
}
int main()
{
int a, b;
f>>a>>b;
g<<exponentiation(a, b);
return 0;
}