// Testkör det egendefinierade filtret

import java.io.*;

class FilterDemo {
    public static void main (String [] arg) throws IOException {

	Reader isr = new InputStreamReader(System.in);
	Reader tlr = new ToLowerCaseReader (isr);
	BufferedReader r = new BufferedReader (tlr);

	String s = r.readLine();
	System.out.println(s); 
    }
}