Problem:
Score : 100 points

Problem Statement

As a New Year's gift, Dolphin received a string s of length 19.

The string s has the following format: [five lowercase English letters],[seven lowercase English letters],[five lowercase English letters].

Dolphin wants to convert the comma-separated string s into a space-separated string.

Write a program to perform the conversion for him.

Constraints

The length of s is 19.

The sixth and fourteenth characters in s are ,.

The other characters in s are lowercase English letters.

Input

The input is given from Standard Input in the following format:

s

Output

Print the string after the conversion.

Sample Input 1

happy,newyear,enjoy

Sample Output 1

happy newyear enjoy

Replace all the commas in happy,newyear,enjoy with spaces to obtain happy newyear enjoy.

Sample Input 2

haiku,atcoder,tasks

Sample Output 2

haiku atcoder tasks

Sample Input 3

abcde,fghihgf,edcba

Sample Output 3

abcde fghihgf edcba

Solution in Rust (1.15.1) (judge verdict: Accepted)

use std::io::{Read, Write, stdin, stdout};

fn solve<R: Read, W: Write>(mut input: R, mut output: W) {
    let mut s = String::new();
    input.read_to_string(&mut s).unwrap();
    write!(output, "{}", s.replace(",", " ")).unwrap();
}

fn main() {
    solve(stdin(), stdout());
}

#[cfg(test)]
mod tests {
    fn test(input: &[u8], output: &[u8]) {
        let mut v = Vec::<u8>::new();
        ::solve(input, &mut v);
        assert_eq!(&v, &output);
    }
    #[test]
    fn case1() {
        test(b"happy,newyear,enjoy\n", b"happy newyear enjoy\n");
    }
    #[test]
    fn case2() {
        test(b"haiku,atcoder,tasks\n", b"haiku atcoder tasks\n");
    }
    #[test]
    fn case3() {
        test(b"abcde,fghihgf,edcba\n", b"abcde fghihgf edcba\n");
    }
}