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def main():
    n=int(input())
    f=[]
    for i in range(n):
        d=input().split()
        if d[0]=="TAK":
            if len(f)<10:
                f.append(i+1)
            elif int(d[1])<2:
                f.append(i+1)
        if len(f)==20:
            break
    print(*f)
main()