#include <iostream>
#include <string>
using namespace std;
string a;
int K;
int main()
{
getline(cin,a);
for(int x=0; x<a.length(); x++)
{
if('A'<=a[x]&&a[x]<='Z')
{
K=a[x]-'A';
K+=13;
if(K>25) K-=26;
cout<<(char)(K+'A');
}
else if('a'<=a[x]&&a[x]<='z')
{
K=a[x]-'a';
K+=13;
if(K>25) K-=26;
cout<<(char)(K+'a');
}
else cout<<a[x];
}
}