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n = int(input())

finalists = []
position = 1

for i in range(n):
    user = input().split()

    can_participate_in_final = True if user[0] == "TAK" else False
    number_of_finals = int(user[1])

    if len(finalists) < 10 and can_participate_in_final:
        finalists.append(str(position))
    elif len(finalists) >= 10 and can_participate_in_final and number_of_finals < 2 and len(finalists) < 20:
        finalists.append(str(position))

    position += 1

print(' '.join(finalists))