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