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#include <bits/stdc++.h>
using namespace std;

int main(){
	ios_base::sync_with_stdio(false), cin.tie(nullptr);
	int N;
	cin >> N;
	vector<pair<int, int> > people;
	for(int i = 0; i < N; i++){
		string s;
		int x;
		cin >> s >> x;
		if(s == "TAK"){
			people.push_back({x, i});
		}
	}
	vector<int> v;
	for(int i = 0; i < (int)people.size(); i++){
		if(v.size() < 10 || (v.size() < 20 && people[i].first < 2)){
			v.push_back(people[i].second);
		}
	}
	for(int i = 0; i < 20; i++){
		cout << (v[i]+1) << " \n"[i+1 == 20];
	}
}