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def main():
    n = int(input())
    
    participants = []
    flag = True

    for i in range(n):
        s, x = input().strip().split()
        x = int(x)

        if len(participants) < 10:
            if s == "TAK":
                participants.append(i+1)
        elif len(participants) < 20:
            if s == "TAK" and x < 2:
                participants.append(i+1)
        
        if len(participants) == 20 and flag:
            flag = False
            print(" ".join(map(str, participants)))
    
    
if __name__ == "__main__":
    main()