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