///////    Lowercase.java    ///////
import java.io.*;    // Use java.io package

// basic ASCII character I/O

class Lowercase
{
    public static void main(String[] args)
        throws IOException
    {  int i;
       while ( (i = System.in.read()) != -1 )  // input char
       {    i = Character.toLowerCase( (char) i);
            System.out.write(i);
       }
    }
}