import java.util.*;
class CaesarCipher{
    private String L,msg;
    public CaesarCipher(String L){
        this.L=L;
    }
    public void encode(){
        msg="";
        for( int position=0; position<L.length();position++){
            msg+=rot13(L.charAt(position));
        }
    }
    private static char rot13(char ch){
        if(Character.isLetter(ch)){
            if(ch>='A' && ch<='M'){
                ch= (char)(ch+13);
            }else if(ch>='N' && ch <='Z'){
                ch= (char)(ch-13);
            }else if(ch>='a' && ch<='m'){
                ch= (char)(ch+13);
            }else if(ch>='n' && ch <='z'){
                ch= (char)(ch-13);
            }
        }
        return ch;
    }
    public String toString(){
        return "\t"+msg;
    }
}
public class ISC2017Q3 {
    public static void main(String[] args) {
        Scanner in = new Scanner( System.in );
        System.out.print("INPUT:\t");
        String L=in.nextLine();
        if(L.length()>3 && L.length()<100){
            System.out.println("OUTPUT:\tThe cipher text is:");
            CaesarCipher cipher=new CaesarCipher(L);
            cipher.encode();
            System.out.println(cipher);
        }else{
        System.out.println("OUTPUT:\tINVALID LENGTH");

        }
        in.close();
    }
}