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#include <bits/stdc++.h>

using namespace std;


int main() {    
    int n;
    cin >> n;
    int j = 0;


    string  buff, buff_n; 
    for(int i = 0; i < n; i++) {
        cin >> buff >> buff_n;
        if(j >= 20)
            continue;

        if(buff[0] == 'N')
            continue;
    
        int k = stoi(buff_n);
        if(j > 9 && k >= 2)
            continue;
        cout << i + 1 << " ";
        j += 1;
    }
    

    return 0;

}