#include <iostream>
using namespace std;
int main()
{
string s;
getline(cin, s);
for(int i = 0; i < s.size(); i++)
{
if(s[i] <= 'z' && s[i] >= 'a') s[i] = (s[i] - 'a' + 1) % 26 + 'a';
if(s[i] <= 'Z' && s[i] >= 'A') s[i] = (s[i] - 'A' + 1) % 26 + 'A';
}
cout << s << endl;
return 0;
}