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