코딩테스트9번

package main;

import java.util.Scanner;


public class Main {

	public String solu(String a) {
	
		char b[] = a.toCharArray();
		
		for(int i = 0; i < b.length; i ++) {
			if(Character.isAlphabetic(b[i])) {
				b[i] = ' ';
			}
		}
		
	 	String s = String.valueOf(b) ;
	 	String sa =  s.replaceAll(" ", "");
	 	
	 
		return String.valueOf(s.replaceAll(" ", ""));
		
		
			}
		
		
	
	
	
	public static void main(String[] args) {
		
	
	
	Main main = new Main();
	
	Scanner scan = new Scanner(System.in);
	
	String a = scan.nextLine();
	
	
	main.solu(a);
	System.out.println(main.solu(a));

	}
	
	
	

	
	}