#include<bits/stdc++.h>
using namespace std;
int main()
{
string s = "abcdefghijklmnopqrstuvwxyz";
string s2 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
string a;
cin>>a;
for(int i = a.size()-1;i>=0;i--)
{
if(a[i]>='a')
cout<<s2[(a[i]-'a'+3)%26];
else
cout<<s[(a[i]-'A'+3)%26];
}
}
