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