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x = int(input())
a = []
for i in range(1, x + 1):
    z = input()
    czymoze = ''.join(b for b in z if b.isalpha())
    liczba = ''.join(k for k in z if k.isdigit())
    iloscwystepow = int(liczba) if liczba else 0
    if czymoze == 'TAK':
        if len(a) == 20:
            break
        if len(a) < 10:
            a.append(i)
        elif len(a) < 20 and iloscwystepow < 2:
            a.append(i)
print(*a)