import java.io.*;
public class Main {

    public static void main(String[] args) {
        // ispecati gi site soglaski
        try {
            FileOutputStream fout = new FileOutputStream("out.txt");
            CustomFilter customout = new CustomFilter(fout);
            for(int i = System.in.read(); i != 'X'; i = System.in.read()) {
                customout.write(i);
            }
        }
        catch (IOException ex) {
            System.out.println(ex);
        }
    }
}