# include<iostream> #include<cstdio> using namespace std; int main(){ char a; cin>>a; int c=a+1,b=a-1; if(b>=32&&b<=126){ cout<<b<<endl; } else{ cout<<"Input Error!"<<endl; } if(c>=32&&c<=126){ cout<<c<<endl; } else{ cout<<"Input Error!"<<endl; } return 0; }