#include <bits/stdc++.h> using namespace std; int a[110],cnt1,cnt2,cnt3,n; int main(){ int n;cin>>n; for(int i=1;i<=n;i++){ cin>>a[i]; } for(int i=1;i<=n;i++){ if(a[i]==1) cnt1++; if(a[i]==2) cnt2++; if(a[i]==3) cnt3++; } if(cnt1>cnt2 and cnt1>cnt3) cout<<"A"; else if(cnt2>cnt1 and cnt2>cnt3) cout<<"B"; else if(cnt3>cnt1 and cnt3>cnt2) cout<<"C"; else cout<<"NONE"; return 0; }