Cod sursa(job #1445913)

Utilizator iulianrotaruRotaru Gheorghe-Iulian iulianrotaru Data 31 mai 2015 14:01:15
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.26 kb
Raporteaza aceasta sursa 
#include <fstream>
#define Xp 1999999973
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
long long n,p,x;
int main()
{
    f>>n>>p;
    x=1;
    while(p) {if(p&1) x*=n,n--; n=n*n%Xp; p/=2;}
    g<<x;
    g.close(); return 0;
}