#include<bits/stdc++.h>
using namespace std;
int main(){
	string a;
	cin>>a;
	for(int i=0;i<a.size();i++){
		if(a[i]>='a'&&a[i]<'z'||a[i]>='A'&&a[i]<'Z'){
			cout<<char(a[i]+1);
		}else if(a[i]=='z'||a[i]=='Z'){
			cout<<char(a[i]-25);
		}else{
			cout<<a[i];
		}
	}
	return 0;
}
/**************************************************************
	Problem: 1402
	User: panyuchen
	Language: C++
	Result: Wrong Answer
****************************************************************/