import java.util.*;
public class Main{
public static void main(String[]args){
Scanner sc = new Scanner(System.in);
String str = sc.nextLine();//包块空格输入
for(char c :str.toCharArray()){
if(c>= 'a' && c <= 'z') {
c=(char)((c-'a'+1)%26+'a');//进行转换
System.out.print(c);
}
else if(c>='A' && c <='Z'){
c=(char)((c-'A'+1)%26+'A');//进项转换
System.out.print(c);
}
else{
System.out.print(c);
}
}
}
}