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import sys

input = sys.stdin.readline
n = int(input())
in_final = 0
for i in range(n):
  wants, starts = input().split()
  wants = wants == "TAK"
  starts = int(starts) < 2
  if not wants:
    continue
  if in_final < 10:
    print(i + 1, end=" ")
    in_final += 1
    continue
  if in_final == 20:
    break
  if starts:
    print(i + 1, end=" ")
    in_final += 1
    continue
print("")