Cod sursa(job #2465965)

Utilizator MichaelXcXCiuciulete Mihai MichaelXcX Data 1 octombrie 2019 09:33:27
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.47 kb
#include <fstream>

using namespace std;

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

int n, p;

int logPow(int n, int p)
{
    if(p < 0)
        return logPow(1/n, -p);

    else if(p == 0)
        return 1;

    else if(p == 1)
        return n;

    else if(p % 2)
        return logPow(n * n, p * (p - 1) / 2);

    else
        return logPow(n * n, p / 2);
}

int main()
{
    fin >> n >> p;
    fout << logPow(n, p);
    return 0;
}