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#include<bits/stdc++.h>
using namespace std;
#ifdef DEBUG
auto&operator <<(auto& o, pair<auto, auto> p) {return o<<"{"<<p.first<<", "<<p.second<<"}";}
auto operator <<(auto& o, auto x)->decltype(x.end(), o) {o<<"{"; for(auto v : x) o<<v<<", "; return o<<"}";}
#define debug(X...) cerr<<"["#X"]: ", [](auto...$) {((cerr<<$<<"; "),...)<<endl;}(X)
#else 
#define debug(...){}
#endif
#define int long long
const int INF = 1e18+7;
#define mp(x, y) make_pair(x, y)
#define fi first
#define se second
#define eb emplace_back
int32_t main()
{
	cin.tie(0)->sync_with_stdio(0);
	int n;
	cin>>n;
	vector<int> res;
	for(int i=1;i<=n;i++)
	{
		string s;
		cin>>s;
		int x;
		cin>>x;
		if(s == "NIE") continue;
		if(x < 2 && res.size() < 20) res.eb(i);
		if(x >= 2 && res.size() < 10) res.eb(i);
	}
	for(auto v : res)
		cout<<v<<" ";
}