#include<iostream>
#include<cmath>
#include<vector>
#include<string>
typedef unsigned long long ull;
#define rep(i,a) for(int i=0;i<a;i++)
#define loop(i,a,b) for(int i=a;i<b;i++)
using namespace std;
const double eps = 1e-10;
const double pi = acos(-1);
const double inf = (int)1e8;

int main(void){
  int out = 0, base = 0,point = 0;
  int n;
  cin>>n;
  int i=0;
  while(true){
    i++;if(i>20)break;
    string s;
    cin>>s;
    //cout<<s<<endl;
    
    if(s=="OUT"){
      out++;
      //cout<<out<<endl;
      if(out==3){
	//cout<<"poin"<<endl<<endl;;
	cout<<point<<endl;
	point=0;
	out = 0;
	base = 0;
	n--;
	if(n==0)break;
      }
    }
    else if(s=="HIT"){
      base++;
      //cout<<base<<endl;
      if(base>=4){
	//cout<<base<<" "<<point<<endl;
	point++;
	base--;
	//cout<<base<<" "<<point<<endl;
      }
    }
    
    if(s=="HOMERUN"){
      point += base + 1;
      base = 0;
      //cout<<base<<" "<<point<<endl;
		     
    }
    
  }
  return 0;
}