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