#include <bits/stdc++.h>

using namespace std;

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

}