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