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#include <bits/stdc++.h>
using namespace std;
int n;
vector<pair<int, int>>a;
int main() {
    cin >> n;
    int i = 0;
    while (n--) {
        i++;
        string s; int k; cin >> s >> k;
        if (s == "NIE")
            continue;
        a.push_back({k, i});
    }
    for (int i = 0; i < 10; i++) {
        cout << a[i].second << ' ';
    }
    int ile = 10;
    for (int i = 10; i < a.size(); i++) {
        if (a[i].first < 2) {
            ile++;
            cout << a[i].second << ' ';
        }
        if (ile == 20)
            break;
    }
}