SB=淋巴肉

#include<bits/stdc++.h> using namespace std; string s; int n,cnt; int main() { cin>>n; while(n--) { cin>>s; if(!(s[0]>='A'&&s[0]<='G'||s[0]>='R'&&s[0]<='T'))cnt++ } cout<<cnt; return 0; }