Problem:
X Cubic

Write a program which calculates the cube of a given integer x.

Input

An integer x is given in a line.

Output

Print the cube of x in a line.

Constraints

1 ≤ x ≤ 100

Sample Input 1

2

Sample Output 1

8

Sample Input 2

3

Sample Output 2

27

Solution in Ruby (judge verdict: Accepted)

MODE = "stdio"
require 'matrix'

tmp = Array.new

class Integer
  def divisor_list2
    return [1] if self == 1
    (1..Math.sqrt(self).to_i).select do |i|
      self%i == 0
    end.map {|e| [e, self/e]}.flatten.uniq.sort
  end
end

if(defined? MODE)
  tmp = STDIN.read.split("\n")
else
  iotmp = "\
  2
  ".split("\n")
  iotmp.each{|s|
    tmp << s.strip
  }
end

n = tmp[0].to_i

puts n**3