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