#include<bits/stdc++.h>
using namespace std;
int main(){
	string a;
	getline(cin,a);
	int a1=a.size();
	for(int i=0;i<=a1-1;i++){
		if(a[i]>='a'&&a[i]<='y'||a[i]>='A'&&a[i]<='Y'){
			cout<<char(a[i]+1);
		}else{
			if(a[i]=='z'){
				cout<<"a";
			}else{
				if(a[i]=='Z'){
					cout<<"A";
				}else{
					cout<<a[i];
				}
			}
		}
	}
	return 0;
}