Problem:
Score : 200 points

Problem Statement

Given is a string S. Replace every character in S with x and print the result.

Constraints

S is a string consisting of lowercase English letters.

The length of S is between 1 and 100 (inclusive).

Input

Input is given from Standard Input in the following format:

S

Output

Replace every character in S with x and print the result.

Sample Input 1

sardine

Sample Output 1

xxxxxxx

Replacing every character in S with x results in xxxxxxx.

Sample Input 2

xxxx

Sample Output 2

xxxx

Sample Input 3

gone

Sample Output 3

xxxx

Solution in Ruby (2.3.3) (judge verdict: Accepted)

# coding: utf-8
class Case02

  def initialize
  end

  def show
    p self.instance_variables
        .map{ |sym| [sym, self.instance_variable_get(sym)] }
        .to_h
  end
  
  # 実行する
  def execute
    read
    solve
    output
  end

  def read
    @s = gets.chomp
  end

  def solve
    @result = 'x' * @s.length
  end
  
  def output
    puts @result
  end

end

Case02.new.execute if $0 == __FILE__