#include<bits/stdc++.h>
using namespace std;
int main()
{
    string a;
    getline(cin , a);
    for(int i = 0;i < a.size();i++)
    {
    	if(islower(a[i]))
    	{
    		if(a[i] == 'z')
    		{
    			a[i] = 'a';
			}
			else
			{
    			a[i] = a[i] + 1;
    		}
		}
	}
	cout << a;
    return 0;
}
/**************************************************************
	Problem: 1873
	User: admin
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2076 kb
****************************************************************/