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#include <iostream>

using namespace std;


int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	string s;
	int c;
	int counter = 0;
	for(int i = 1; i <= n; i++) {
		cin >> s >> c;
		if (s == "TAK") {
			if (counter < 10 || (counter < 20 && c < 2)) {
				cout << i << " ";
				counter++;
			}
		}
	}
	cout << "\n";
	return 0;
}