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#include <bits/stdc++.h>

using namespace std;

int main() {
    string buf=""; 
    bool willing=false; int tries=0;
    //
    uint64_t y=0,x=0;
    cin >> y;
    for (int i=0; i<y && x<20; i++) {
        cin >> buf;
        if (buf == "TAK") willing = true;
        else willing = false;
        cin >> tries;
        if (willing == true) {
            if (x < 10) { 
                cout << i+1 << ' '; 
                x++;
            }
            else if (tries < 2) {
                cout << i+1 << ' ';
                x++;
            }
        }
    }
    return 0;
}