#include<iostream> #include<cstdio> using namespace std; int main() { int a; cin>>a; switch (a) { case 5 : cout<<"A\n"; break; case 4 : cout<<"B\n"; break; case 3 : cout<<"C\n"; break; case 2 : cout<<"D\n"; break; default: cout<<"E\n"; } return 0; }