Cod sursa(job #2985841)
Utilizator | Data | 27 februarie 2023 11:35:56 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.36 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long exp_rap(int a, int n)
{
if(n==0) return 1;
else if(n%2==0) return exp_rap(a,n/2)* exp_rap(a,n/2);
else return a*exp_rap(a,n/2)* exp_rap(a,n/2);
}
int main()
{
int a,n;
fin>>a>>n;
fout<<exp_rap(a,n);
}