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.Text;

public class Program
{
    public static void Main(string[] args)
    {
        // 文字列の入力
        string u = Console.ReadLine();

        StringBuilder x = new StringBuilder();
        for (int i = 0; i < u.Length; i++) x.Append("x");
            Console.WriteLine(x.ToString());
    }
}