Cod sursa(job #2265141)
Utilizator | Data | 20 octombrie 2018 17:09:24 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
Compilator | cpp-32 | Status | done |
Runda | Arhiva educationala | Marime | 0.41 kb |
#include <iostream>
#include <fstream>
using namespace std;
long long putere(long long a,long long x)
{
if(x)
{
if(x%2==0)
return putere(a,x/2)*putere(a,x/2);
else
return a*putere(a,(x-1)/2);
}
}
int main()
{
ifstream fin("lg.in");
ofstream fout("lg.out");
long long n,p;
fin>>n>>p;
fout<<putere(n,p);
fin.close();
fout.close();
return 0;
}