import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.Scanner;
 
public class Main
{
	public static void main(String[] args)
	{
		Scanner in = new Scanner(System.in);
		String s = in.nextLine();
		s = s.replaceAll(" +", " ");
        if(s.charAt(0) == ' ') 
	    {
	          s = s.substring(1, s.length());
	    }
		if(s.charAt(s.length()-1) == ' ')
		{
	           s = s.substring(0, s.length()-1);
		}
		System.out.print(s);
	}
}

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IE1yICAgIENoYXJsaWUgICAgQ2hhcGxpbiAgIA==

 Mr    Charlie    Chaplin