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

#define pb push_back
#define fi first
#define sn second

typedef long long ll;
typedef vector<int> VI;
typedef vector<char> VC;
typedef pair<int, int> PI;

int main() {
  int n;
  cin >> n;

  vector<PI> X;
  int x;
  string s;

  for (int i = 0; i < n; i++) {
    cin >> s >> x;

    if (s == "TAK") {
      X.pb({i + 1, x});
    }
  }

  int finalists = 0;

  for (PI p : X) {
    if (finalists < 10 || p.sn < 2) {
      finalists++;
      cout << p.fi << " ";
    }

    if (finalists == 20) {
      break;
    }
  }
  cout << endl;

  return 0;
}