Cod sursa(job #2520148)

Utilizator filipasvladVlad Filipas filipasvlad Data 9 ianuarie 2020 00:01:16
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>

using namespace std;

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

int a, b;
bool p[200005];
int main()
{
    fin>>a>>b;
    int r = 1;
    while(b)
    {
        if(b % 2 == 1)
            r = r * a;
        a *= a;
        b/=2;
    }
    fout<<r;
}