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 C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <iostream>
using namespace std;

long long S, K, dp[4][10001] = {};
bool used[4][10001] = {};

long long func(int n, int s)
{
	if (used[n][s])
		return dp[n][s];
	used[n][s] = true;
	if (n == 3)
	{
		return dp[3][s] = s == S;
	}
	else
	{
		long long e = 0;
		n++;
		for (int i = 0; i <= K; i++)
		{
			e += func(n, s + i);
		}
		return dp[--n][s] = e;
	}
}

int main()
{
	cin >> K >> S;
	cout << func(0, 0) << '\n';
	return 0;
}