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#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n, counter = 0;
    cin >> n;
    for(int i = 1; i <= n; i++){
        string s;
        int x;
        cin >> s >> x;
        if(s[0] == 'T' && (counter < 10 || x < 2) && counter < 20){
            cout << i << " ";
            counter++;
        }
    }
    return 0;
}