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#include <iostream>
#include <string>

using namespace std;

int main() {
    int numContestants {0}, idx {0}, numFinals;
    string possible;

    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    cin >> numFinals;

    while (numContestants < 10) {
        cin >> possible >> numFinals;
        ++idx;

        if (possible[0] == 'N')
            continue;
        
        if (numContestants)
            cout << " ";
        
        cout << idx;
        ++numContestants;
    }

    while (numContestants < 20) {
        cin >> possible >> numFinals;
        ++idx;

        if (possible[0] == 'N' || numFinals > 1)
            continue;

        cout << " " << idx;
        ++numContestants;
    }

    cout << endl;

    return 0;
}