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n = int(input())

ans = ""
counter = 20
indeks = 0
for i in range(n):
    if counter == 0:
        break
    choice, number = input().split(" ")
    indeks += 1
    if choice == "TAK":
        if counter > 10:
            ans += f" {indeks}"
            counter -= 1
        elif counter > 0 and int(number) < 2:
            ans += f" {indeks}"
            counter -= 1

print(ans[1:])