Given a string with employee id, name and manager name, print out all of them in the tree format.\n\nInput: \n```\n"1:Max:4, 4:Ann:0, 2:Jim:4, 3:Tom:1"\n```\n1 -> employee id\nMax -> name\n4 -> manager id\n\nOutput:\n\n```\nAnn\n- Max\n-- Tom\n- Jim\n```\n\nI got stuck on how to get the top level of the manager in the output. Interviewer told me that I could regard the one with emId 0 to be the top one.\n\nI didn\'t finish my code though because I misunderstood the output format. I thought the output was like this which was wrong. I wasted time on re-thinking about it.\n```\nAnn\n- Max\n- Jim\nMax\n- Tom\n```

Given a string with employee id, name and manager name, print out all of them in the tree format.\n\nInput: \n\n"1:Max:4, 4:Ann:0, 2:Jim:4, 3:Tom:1"\n\n1 -> emp