Cod sursa(job #2400281)

Utilizator alex.paninAlexandru Panin alex.panin Data 8 aprilie 2019 16:27:58
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.37 kb
#include <fstream>

using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long pt(int a, int b)
{
    int r=1;
    while(b)
    {
        if(b%2==1)
        {
            r=(r*a);
        }
        a=(a*a);
        b=b/2;
    }
    return r;
}
int main()
{
    int a,b;
    fin>>a>>b;
    fout<<pt(a,b);

    return 0;
}