Power

#include <iostream>

double pow(double a, unsigned int n) {
  double result = 1.;
  double a_in_power_of_2 = a;

  while (n) {
    if ((n & 1u) == 1u)
      result *= a_in_power_of_2;
    a_in_power_of_2 *= a_in_power_of_2;
    n >>= 1u;
  }
  return result;
}

int main() {
  double a = .0;
  unsigned int n = 0;
  std::cin >> a >> n;
  std::cout << pow(a, n);
  return 0;
}