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 C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;
using System.Numerics;
using System.Text;

namespace abc154
{
    class Program
    {
        static void Main(string[] args)
        {
            if (File.Exists("input.txt"))
            {
                Console.SetIn(new StreamReader("input.txt"));
            }
			solve_abc154B();
        }

        public static void solve_abc154B()
        {
            string str = Console.ReadLine();
            StringBuilder newStr = new StringBuilder();
            for (int i = 0; i < str.Length; i++) 
            {
                newStr.Append("x");
            }
            Console.WriteLine(newStr.ToString());
        }

        public static void solve_abc154A()
        {
            string[] color = Console.ReadLine().Split();
            int[] number = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
            string rm = Console.ReadLine();

            if (rm == color[0])
            {
                number[0]--;
                Console.WriteLine("{0} {1}", number[0], number[1]);
            }
            else
            {
                number[1]--;
                Console.WriteLine("{0} {1}", number[0], number[1]);
            }
        }
    }
}