#include<iostream> using namespace std; int main(){ char a,b,c,d; cin>>a>>b>>c>>d; a=char((a+1-97)%26+97; b=char((b+1-97)%26+97; c=char((c+1-97)%26+97; d=char((d+1-97)%26+97; cout<<a<<b<<c<<d; }