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#include <iostream>
#include <vector>

using namespace std;

int main() {
    int n, finals_count;
    vector<int> qualified = vector<int>();
    string can_attend_response;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> can_attend_response >> finals_count;
        if (qualified.size() == 20 || can_attend_response == "NIE") {
            continue;
        }
        if (qualified.size() < 10 || finals_count < 2) {
            qualified.push_back(i);
        }
    }

    for (auto q : qualified) {
        cout << q << " ";
    }

    cout << endl;

    return 0;
}