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#include <bits/stdc++.h>
using namespace std;
int main() {
	int n;
	cin >> n;
	int cnt = 0;
	for (int id = 1; id <= n; id++) {
		string s;
		int x;
		cin >> s >> x;
		if (s == "TAK") {
			if (cnt < 10 || (cnt < 20 && x < 2)) {
				cout << id << " ";
				cnt++;
			}
		}
	}
	cout << "\n";
}