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#include <cstdio>
#include <cstring>

int main() {
  int n, x, r = 0;
  char s[10];
  scanf("%d\n", &n);
  for (int i = 1; i <= n; ++i) {
    scanf("%s %d", s, &x);
    if (r < 10) {
      if (strcmp(s, "TAK") == 0) {
        r++;
        printf("%d ", i);
      }
    } else if (r < 20) {
      if (strcmp(s, "TAK") == 0 && x < 2) {
        r++;
        printf("%d ", i);
      }
    }
  }
  printf("\n");
  return 0;
}