#include<bits/stdc++.h>
using namespace std;
int main(){
    string sir;
    getline(cin,sir);
    for(int i=0;i<sir.size();i++){
        if(sir[i]>='a'&&sir[i]<'z'||sir[i]>='A'&&sir[i]<'Z'){
           cout<<char(sir[i]+1);
        }else if(sir[i]=='z'||sir[i]=='Z'){
           cout<<char(sir[i]-25);
        }else{
        	cout<<sir[i];
        }
    }
    return 0;
}
/**************************************************************
	Problem: 1402
	User: huxuanchen
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2076 kb
****************************************************************/