#include <iostream>

using namespace std;

int main(){
	string s;
	
	while(cin >> s){
		for(int i = 0;i < s.size();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;
}