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