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#include <iostream>
  #include <stdio.h>
  #include <cstdio>
  using namespace std;


  int main() {
    int selected = 0;

    int n;
    cin >> n;
    
    for (int i = 1; i <= n; i++) {
      string isReadyWord;
      cin >> isReadyWord;
      bool isReady = isReadyWord[0] == 'T';
      
      int count;
      cin >> count;

      if (isReady) {
        if (count < 2 || selected < 10) {
          printf("%d ", i);
          selected++;
        }
      }
      if (selected == 20) {
        break;
      }
    }
    return 0;
  }