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#include <bits/stdc++.h>

using namespace std;

int main(){
	
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	int n;
	cin >> n;
	
	vector<int> t(n);
	vector<bool> s(n);
	string x;
	int y;
	
	for(int i = 0; i < n; ++i){
		cin >> x >> y;
		
		t[i] = y;
		if(x == "TAK") s[i] = 1;
		else s[i] = 0;
	}
	
	int cnt = 1, it = 0;
	while(cnt <= 10){
		if(s[it] == false){ ++it; continue; }
		
		++it; ++cnt;
		cout << it << " ";
	}
	while(cnt <= 20){
		if(s[it] == false){ ++it; continue; }
		if(t[it] >= 2){ ++it; continue; }
		
		++it; ++cnt;
		cout << it << " ";
	}
	
	return 0;
}