import java.util.Scanner;
public class Key {
private static String str;
private static int ciString; public static int Key(String str) {
// TODO Auto-generated method stub
char array[]=str.toCharArray();
for(int i=1;i<array.length;i++){
array[i]=(char)(array[i-1]+ i*2);
ciString =array[i];
}
return ciString;
}
public static String jiemi(int s){
return str;
}
public static void main(String[] args){
// TODO Auto-generated method stub
Scanner c=new Scanner(System.in);
String str=c.next();
Key(str);
System.out.print(ciString);
}}
public class Key {
private static String str;
private static int ciString; public static int Key(String str) {
// TODO Auto-generated method stub
char array[]=str.toCharArray();
for(int i=1;i<array.length;i++){
array[i]=(char)(array[i-1]+ i*2);
ciString =array[i];
}
return ciString;
}
public static String jiemi(int s){
return str;
}
public static void main(String[] args){
// TODO Auto-generated method stub
Scanner c=new Scanner(System.in);
String str=c.next();
Key(str);
System.out.print(ciString);
}}
public static int Key(String str) {
ciString=str;
return ciString;
}