#include<iostream> using namespace std; int main(){ char a; cin.get(a); if(a-1<32||a-1>126){ cout<<"lnput Error!"<<endl; } else { cout<<a-1<<endl; } if(a+1<32||a+1>126){ cout<<"lnput Error!"<<endl; } else{ cout<<a+1<<endl; } return 0; }