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#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <algorithm>
#include <unordered_map>
#include <unordered_set>
#include <queue>
#include <deque>
#include <tuple>
#include <bitset>

using namespace std;

#define pb push_back
#define mp make_pair
#define st first
#define nd second
#define x first
#define y second

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    vi A;
    vi B;

    int n;
    cin >> n;

    for(int i=1; i<=n; i++){
        string s;
        int x;
        cin >> s;
        cin >> x;
        if(s=="NIE"){
            continue;
        }
        
        if(A.size()<10){
            A.pb(i);
        }else if(B.size()<10 and x<2){
            B.pb(i);
        }
    }

    for(auto a: A){
        cout << a << " ";
    }

    for(auto b: B){
        cout << b << " ";
    }

    cout << "\n";
    return 0;
}