Cod sursa(job #1156937)

Utilizator StefansebiStefan Sebastian Stefansebi Data 28 martie 2014 09:46:51
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.46 kb
#include<fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long a, b, p;

long long putere(long long a, long long n){
    long long x;
    if (n == 1)
        return a;
    if (n % 2 == 1)
        return a * putere(a, n - 1) % 1999999973;
    x = putere(a, n / 2) % 1999999973;
    return x * x % 1999999973;

}

int main(){
    fin >> a >> b;
    fout << putere(a, b);
    fin.close();
    fout.close();
}