/******************************************************************************
 * This program converts stdin to lowercase.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

import org.pureprogrammer.Utils;

public class LowercaseFilter {

    public static void main(String[] args) {
        int c;
        while ((c = Utils.getchar()) != -1) {
            System.out.print(String.valueOf(Character.toChars(Character.toLowerCase(c))));
        }
    }
}