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#include<bits/stdc++.h>
using namespace std;
int n;
vector<pair<int, int>> v;
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++)
    {
        string s; int x;
        cin >> s >> x;
        if(s == "NIE") continue;
        v.push_back({i, x});
    }

    sort(v.begin(), v.end());
    
    int wyp = 0;
    for(int i = 0; i < v.size(); i++)
    {
        if(wyp < 10 || v[i].second < 2)
        {
            cout << v[i].first << " ";
            wyp++;
        } 
        if(wyp == 20) break;
    }
}