public class M3L1T1
{
    public static void main (String[] args) {
        System.out.println(encodeString("sigh"));
    }
    
    public static String encodeString (String input) {
    int index = 0;
    String output = "";
    while (index < output.length()) {
        output = output + (char) (output.charAt(index) + 13);
        int forWrap = forWrap + (char) (forWrap.charAt(index));
        index++;
    }
    if (forWrap > 26) {
        output = output + (char) (output.charAt(index) - 13);
    }
    return output;
    }
}