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 PHP7 (7.0.15) (judge verdict: Runtime Error)

<?php
$u = trim(fgets(STDIN));
$cnt = mb_strlen($u);
for($i = 0; $i < $cnt; $i++) {
    echo 'x';
}
echo PHP_EOL;