#pragma GCC optimize(3, "Ofast", "inline")
#include <iostream>
#include<map>
#include<vector>
 #include <bits/stdc++.h>
#define IOS ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
#define INF 0x3f3f3f3f
#define L_INF 0x7f3f3f3f3f3f3f3f
#define db cout << "debug\n";

using namespace std;
const int Mod = 998244353;
using ll = long long;
unordered_map<string,int> tname;
unordered_map<string,int> ans,ans1;
int pos,m,sum_team;
int t,tt;
struct submission
{
    int num;
    string name;
    int time,pro;
    bool zt;
}sub[100010];

bool cmp(const submission& a, const submission& b) {
    return std::tie(a.name, a.pro, a.time, a.num) < std::tie(b.name, b.pro, b.time, b.num);
}


struct problem
{
    int num_sub=0,sum_time=0,less_time=0;
    bool flag=false;
    int index;
};

struct team
{
    string name;
    int guo,fa;
    // int start,end;
    vector<problem> pro;
}tea[100010];

bool cmp1(pair<pair<int,int>,string> a,pair<pair<int,int>,string> b)
{
    if(a.first.first!=b.first.first)
        return a.first.first>b.first.first;
    return a.first.second<b.first.second;
}

void solve()
{
    ans.clear();
    ans1.clear();
  	int m;
  	cin>>m;
    tname.clear();
    sum_team=0;
	for(int i=1;i<=m;i++)
	{
		sub[i].num=i;
		string c,p,s;
		int t;
		cin>>c>>p>>t>>s;
		sub[i].name=c;
		sub[i].pro=p[0]-'A';
		sub[i].time=t;
		if(s=="accepted")
			sub[i].zt=true;
		else
			sub[i].zt=false;
	}
    if(m==1)
    {
        cout<<"1\n";
        cout<<sub[1].name<<"\n";
        return;
    }
	sort(sub+1,sub+1+m,cmp);
    pos=1;
	while(pos<=m)
	{
		string name=sub[pos].name; //当前队名
        tname[name]=++sum_team;
		bool flag=false; //是否过题
		int guo=0,fa=0; //过题数和罚时
        tea[sum_team].name=name;
        tea[sum_team].pro.clear();
		while(sub[pos].name==name&&pos<=m)
		{
            problem x;
            x.index=sub[pos].pro;
            x.less_time=sub[pos].time;
			int pro=sub[pos].pro; //当前题目
			bool flag1=false;  //是否过题
			int ti=0; //罚时
			// cout<<name<<" "<<pro<<" "<<mint<<"\n";
			while(sub[pos].pro==pro&&sub[pos].name==name&&pos<=m)
			{
                if(!flag1)
                    x.num_sub++;
				if(sub[pos].zt&&flag1==false)
				{
					flag1=true;
					ti+=sub[pos].time;
				}
				else if(!flag1)
					ti+=20;
				pos++;
			}
            x.flag=flag1;
			if(flag1)
			{
				flag=true;
                x.sum_time=ti;
				guo++;
				fa+=ti;		
			}
            tea[sum_team].pro.push_back(x);
		}
        tea[sum_team].guo=guo;
        tea[sum_team].fa=fa;
	}
    int stdguo=0,stdfa=0;
    int stasum=0; //原本有效参赛队数量
    vector<pair<pair<int,int>,string>> all;
    for(int j=1;j<=sum_team;j++) 
        if(tea[j].guo>0)
            all.push_back({{tea[j].guo,tea[j].fa},tea[j].name});
    int ssum=all.size();
    int gold=min(35,(ssum+9)/10);
    if(all.size())
    {
        sort(all.begin(),all.end(),cmp1);
        stasum=ssum;
        // cout<<ssum<<"\n";
        int stguo=all[gold-1].first.first,stfa=all[gold-1].first.second;
        stdguo=stguo;
        stdfa=stfa;
        for(auto c:all)
        {
            if(c.first.first>stguo||c.first.first==stguo&&c.first.second<=stfa)
                ans[c.second]=1,ans1[c.second]=1;
        }
    }
    int num_gold=ans1.size();
    bool flag6=false,flag7=false;
    if(stasum%10!=0)
        flag6=true;
    if(stasum%10!=1)
        flag7=true;
    for(int i=1;i<=m;i++)
    {
        pos=tname[sub[i].name];
        string name=sub[i].name;
        int index=sub[i].pro;
        int shun=sub[i].num;
        int l=i,r=i;
        if(sub[i].zt&&!ans1.count(name))
            continue;
        if(sub[i].zt==false&&ans.count(name)&&(flag6||tea[pos].guo>0))
            continue;
        while(l>0&&sub[l].name==name&&sub[l].pro==index)
            l--;
        while(r<=m&&sub[r].name==name&&sub[r].pro==index)
            r++;
        l++;
        r--;
        bool flag5=false;
        int xinti=0;
        for(int j=l;j<=r;j++)
        {
            bool zt=sub[j].zt;
            if(sub[j].num==shun)
                zt=1-zt;
            if(zt&&flag5==false)
            {
                flag5=true;
                xinti+=sub[j].time;
            }
            else if(!flag5)
            {
                xinti+=20;
            }
        }
        int xinguo=0,xinfa=0;
        for(auto c:tea[pos].pro)
        {
            if(c.index==index)
            {
                if(flag5)
                {
                    xinguo++;
                    xinfa+=xinti;
                }
            }
            else
            {
                if(c.flag)
                {
                    xinguo++;
                    xinfa+=c.sum_time;
                }
            }
        }
        // cout<<gold<<" "<<all.size()<<"***\n";
        if(ans1.count(name))
        {
            if((xinguo<stdguo||xinguo==stdguo&&xinfa>stdfa))
            {
                if(gold==1)
                    continue;
                if(!((gold<all.size()&&(xinguo>all[gold].first.first||xinguo==all[gold].first.first&&xinfa<all[gold].first.second))||num_gold!=gold))
                    if(!(flag7==false&&xinguo==0))
                        if(gold<all.size())
                        {
                            int liguo=all[gold].first.first,lifa=all[gold].first.second;
                            for(int i=gold;i<ssum;i++)
                            {
                                if(all[i].first.first==liguo&&all[i].first.second==lifa)
                                    ans[all[i].second]=1;
                                else
                                    break;
                            }
                        }
                        else if(gold)
                        {
                            // cout<<"***\n";
                            int liguo=xinguo,lifa=xinfa;
                            // cout<<liguo<<" "<<lifa<<"\n";
                            if(xinguo>0)
                                for(int i=gold;i<ssum;i++)
                                {
                                    if(all[i].first.first==liguo&&all[i].first.second==lifa)
                                        ans[all[i].second]=1;
                                    else
                                        break;
                                }
                        }
            }
        }
        else if(tea[pos].guo>0)
        {
            if(xinguo>stdguo||xinguo==stdguo&&xinfa<=stdfa)
                ans[name]=1;
        }
        else if(flag6==false)
        {
            if(gold<all.size())
            {
                // cout<<"***\n";
                int liguo=all[gold].first.first,lifa=all[gold].first.second;
                // cout<<liguo<<" "<<lifa<<"***\n";
                if(xinguo>liguo||xinguo==liguo&&xinfa<lifa)
                    ans[name]=1;
                else
                {
                    if(liguo==1&&lifa==xinfa)
                        ans[name]=1;
                    for(int i=gold;i<ssum;i++)
                    {
                        if(all[i].first.first==liguo&&all[i].first.second==lifa)
                            ans[all[i].second]=1;
                        else
                            break;
                    }
                }
            }
            else
            {
                ans[name]=1;
            }
        }
        else
        {
            if(xinguo>stdguo||xinguo==stdguo&&xinfa<=stdfa)
                ans[name]=1;
        }
    }
    cout<<ans.size()<<"\n";
    for(auto s:ans)
    {
        cout<<s.first<<" ";
    }
    cout<<"\n";
}
int main()
{
    IOS;
// freopen("in.txt", "r", stdin);
// freopen("out.txt", "w", stdout);
    // int t;
    t = 1;
    cin >> t;
    tt=t;
    while (t--)
    {
        solve();
    }
    return 0;
}