#include<stdio.h>
#include<string.h>
#include<ctype.h>
int main()
{
string s;
getline(cin,s);
for(char c:s)
{
if(!(isalpha(c) || c ==''))
{
cout << ("Invalid Input");
return 0;
}
}
for(char c:s)
{
if(ch>='a' && c <='z')
{
    cout << char('Z'-(c-'a'));
}
    else if(c >='A'&& ch <='Z')
    {
        cout<< char('Z'-(c-'A'));
}
else
cout << c;
}
return 0;
}