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#include <bits/stdc++.h>
using namespace std;
// using LL = long long;
// #define ALL(x) x.begin(), x.end()
// #define ssize(x) (int)x.size()

// mt19937 rng(random_device{}());
// int rd(int l, int r) {
//     return uniform_int_distribution<int>(l, r)(rng);
// }

void solve() {
    int n;
    cin >> n;
    int winners = 0;
    for (int i = 1; i <= n; i++) {
        string s;
        int x;
        cin >> s >> x;
        if (s == "NIE" || winners == 20) continue;
        if (winners < 10) {
            winners++;
            cout << i << ' ';
        } else if (x < 2) {
            winners++;
            cout << i << ' ';
        }
    }
    cout << "\n";
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int t = 1;
    // cin >> t;
    while(t--) {
        solve();
    }
}