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/******************************************************************************

Welcome to GDB Online.
GDB online is an online compiler and debugger tool for C, C++, Python, Java, PHP, Ruby, Perl,
C#, OCaml, VB, Swift, Pascal, Fortran, Haskell, Objective-C, Assembly, HTML, CSS, JS, SQLite, Prolog.
Code, Compile, Run and Debug online from anywhere in world.

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


int main()
{
    ios_base::sync_with_stdio(false);
cin.tie(NULL);
    
    int i,wzieci, a,n;
    vector<int> uczestnicy;
    string b;
    cin>>n;
    i=1;
    while(true) {
        cin>>b>>a;
        if(b!="NIE"){
            if(uczestnicy.size()<=10) {
                uczestnicy.push_back(i);
            }
            else {
                if(a<2){
                    uczestnicy.push_back(i);
                }
            }
        }
        if(uczestnicy.size()==20){
            break;
        }
        i++;
    }
    
    for(i=0;i<uczestnicy.size();i++) {
        cout<<uczestnicy[i]<<" ";
    }
 
    return 0;
}