Cod sursa(job #941975)

Utilizator ana@mariaAna Maria Savastre ana@maria Data 20 aprilie 2013 12:24:04
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.38 kb
#include <fstream>
using namespace std;

ifstream in("lgput.in");
ofstream out("lgput.out");

int const I= 1999999973;
int n, p;
int ridica (int n, int p)
{
   if (p==1) return n;
   if (n%2==0) return ridica((long long)n*n%I, p/2)%I;
   if (n%2==1) return (long long)ridica((long long)n*n%I, p/2)*n%I;

}
int main()
{
    in>>n>>p;
    out<<ridica(n, p);
    return 0;
}