Cod sursa(job #1487891)

Utilizator fmmiadolf hitler fmmi Data 17 septembrie 2015 16:15:11
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.5 kb
#include <fstream>
using namespace std;
ifstream in ("lgput.in");
ofstream out ("lgput.out");
long long putere(long long x, long long p)
{
    long long mod = 199999973;
    if (p == 0)
        return 1;
    long long aux = putere (x, p / 2);
    if (p % 2 == 0)
        return aux * aux % mod;
        else
        return (((x * aux) % mod) * aux) % mod;

}
int main ()
{
    long long x, p;
    in >> x;
    in >> p;
    long long r = putere(x, p);
    out << r;
    return 0;
}