public class Moovies {
	    public static String keyNumber(String secretMessage) {
	    	int longueur = secretMessage.length();
	    	int keyNumber = ((secretMessage.length())/2);
	    	String segmentDePhrase = secretMessage.substring(5,(5+keyNumber));
	    	String changeWord = segmentDePhrase.replace("@#?"," ");
	    	String reversed=new StringBuilder(changeWord).reverse().toString();
	    	return reversed;

	    }

	    public static void main(String[] args) {
	    	System.out.println(keyNumber("0@sn9sirppa@#?ia'jgtvryko1"));
	    	System.out.println(keyNumber("q8e?wsellecif@#?sel@#?setuotpazdsy0*b9+mw@x1vj"));
	    	System.out.println(keyNumber("aopi?sedohtém@#?sedhtmg+p9l!"));
	    }
	}