# include<iostream> using namespace std; int main(){ char ch; int q,h; cin>>ch; if(int(ch)-1<32||int(ch)-1>126){ cout<<"input Error"; } else { cout<<int(ch)-1; } if(int(ch)+1<32||int(ch)+1>126){ cout<<"input Error"; } else { cout<<int(ch)+1; } return 0; }