#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define deb(...)
#define DBP(...)
using namespace std;
using   ll         = long long;
using   vi         = vector<int>;
using   pii        = pair<int, int>;
#define pb           push_back
#define mp           make_pair
#define x            first
#define y            second
#define rep(i, b, e) for (int i = (b); i < (e); i++)
#define each(a, x)   for (auto& a : (x))
#define all(x)       (x).begin(), (x).end()
#define sz(x)        int((x).size())

void run();

int main() {
	cin.sync_with_stdio(0); cin.tie(0);
	cout << fixed << setprecision(12);
	run();
	cout << flush; _Exit(0);
}

void run() {
	int n, x, k = 0;
	string s;
	cin >> n;
	rep(i, 0, n) {
		cin >> s >> x;
		if (s[0] == 'T' && (k < 10 || x < 2)) {
			cout << i+1 << ' ';
			if (++k == 20) {
				cout << '\n';
				return;
			}
		}
	}
}