Cod sursa(job #857109)

Utilizator IonSebastianIon Sebastian IonSebastian Data 17 ianuarie 2013 12:07:32
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.32 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream in("lgput.in");
ofstream out("lgput.out");
int main()
{
    int n,a,p=1;
    const int R=1999999973;
    in>>a>>n;
    while(n!=0){
        if(n%2!=0){
            p=(int)((long long)p*a%R);
        }
        a*=a;
        n/=2;
    }
    out<<p;
    return 0;
}