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#include <iostream>
#include <algorithm>

using namespace std;

int main() {
    int n;
    cin >> n;  

    int finalists[10000]; 
    int count = 0;  

   
    for (int i = 0; i < n; ++i) {
        string s;
        int x;
        cin >> s >> x;

       
        if (s == "TAK" && x < 20) {
            finalists[count++] = i + 1;  
        }
    }

    
    sort(finalists, finalists + count);

    
    for (int i = 0; i < 20; ++i) {
        if (i < count) {
            if (i > 0) cout << " ";  
            cout << finalists[i];
        } else {
            break;  
        }
    }

    cout << endl;
    return 0;
}