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