Cod sursa(job #629162)

Utilizator blk.irineluIrina Ursateanu blk.irinelu Data 2 noiembrie 2011 18:48:56
Problema Ridicare la putere in timp logaritmic Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.5 kb
#include<fstream>

using namespace std;

long long n,p,c;
const long long x=1999999973;

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

long long pow(long long n,long long p)
{
    if(p==0) return 1;
    else
      if(p%2==0)
      {
          return pow((n*n)%x,p/2)%x;
      }
     else
       if(p&2==1)
       {
           return (n*pow((n*n)%x,(p-1)/2))%x;
       }

}

int main()
{
    f>>n>>p;
    c=(pow(n,p))%x;
    g<<c;
    f.close();
    g.close();
    return 0;
}