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#include<iostream>
#include<string>
#include<map>
#include<set>
#include<unordered_map>

using namespace std;

class Student {
public:
	int id, grade, gender, score, isVailable;

	Student()
	{
		id = gender = grade = score = isVailable  = -1;
	}

	Student(int i, int gr, int ge, int s)
	{
		id = i;
		grade = gr;
		gender = ge;
		score = s;
	}


} S[200000];


struct cmp {

	bool operator() (const int a, const int b) const {
		if (S[a].score == S[b].score)	return S[a].id < S[b].id;
		return S[a].score < S[b].score;
	}
};

int cnt = 0;
int index = 0;

unordered_map<int, int> HashID;
set<int, cmp> SetS[4][2];		//S[grade][gender]

void init()
{
	cnt = 1;

	HashID.clear();
	for (int i = 0; i < 4; i++)
	{
		for (int j = 0; j < 2; j++)
		{
			SetS[i][j].clear();
		}
	}

}

int add(int mId, int mGrade, char mGender[7], int mScore)
{
	index = cnt++;
	HashID[mId] = index;
	int ge = (strcmp(mGender, "male")) == 0 ? 0 : 1;

	S[index].id = mId;
	S[index].grade = mGrade;
	S[index].gender = ge;
	S[index].score = mScore;
	S[index].isVailable = 1;

	SetS[mGrade][ge].insert(index);

	auto it = --SetS[mGrade][ge].end();

	int res = S[*it].id;
	return res;
}


int remove(int mId)
{
	auto a = HashID.find(mId);
	
	if (a == HashID.end())	return 0;

	int cur_index = HashID[mId];
	
	if (S[cur_index].isVailable == 0)	return 0;

	S[cur_index].isVailable = 0;

	SetS[S[cur_index].grade][S[cur_index].gender].erase(cur_index);

	if (SetS[S[cur_index].grade][S[cur_index].gender].size() == 0)	return 0;

	auto first = SetS[S[cur_index].grade][S[cur_index].gender].begin();

	int res = S[*first].id;

	return res;
}

int query(int mGradeCnt, int mGrade[], int mGenderCnt, char mGender[][7], int mScore)
{
	set<int, cmp> set_tmp;

	S[0].score = mScore;

	for (int i = 0; i < mGradeCnt; i++)
	{
		for (int j = 0; j < mGenderCnt; j++)
		{
			int ge = (strcmp(mGender[j], "male")) == 0 ? 0 : 1;

			auto a = SetS[mGrade[i]][ge].lower_bound(0);

			if (a == SetS[mGrade[i]][ge].end())	continue;

			set_tmp.insert(*a);
		}
	}

	if (set_tmp.size() == 0)	return 0;

	auto a = set_tmp.begin();
	int res = S[*a].id;
	return res;
}