Cod sursa(job #2566895)

Utilizator uclaudiu7Ursescu Claudiu uclaudiu7 Data 3 martie 2020 13:46:48
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.46 kb
#include <bits/stdc++.h>

using namespace std;

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

int exp(int x, int n)
{
    if(n < 0)
        return exp(1 / x, -n);
    if(n == 0)
        return 1;
    if(n == 1)
        return x;
    if(n % 2 == 0)
        return exp(x * x, n / 2);
    if(n % 2 == 1)
        return x * exp(x * x, (n - 1) / 2);
}

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