#include<bits/stdc++.h> using namespace std; int score,n,x,cnt; int main() { cin>>score; cin>>n; for(int i=2;i<=n;i++) { cin>>x; if(x>score) cnt++; } if(cnt+1<=n0.1) cout<<"A"; else if(cnt+1<=n0.3) cout<<"B"; else if(cnt+1<=n0.6) cout<<"C"; else if(cnt+1<=n0.8) cout<<"D"; else cout<<"E"; return 0;//仅供参考 }