/*#include<iostream> using namespace std; int main(){ int n,k; cin>>n>>k; int a[n+1]; for(int i=1;i<n+1;i++) cin>>a[i]; for(int i=k;i>0;i--){ cout<<a[i]<<" "; } for(int i=k+1;i<=n;i++) cout<<a[i]<<" "; return 0; } */ #include<iostream> using namespace std; int main(){ char a; cin>>a; if(a-1<36) cout<<"input Error!"<<endl; else cout<<a-1<<endl; if(a+1>126) cout<<"input Error!; else cout<<a+1; return 0; }