01204212/statuses

You are given an information on comments are posted. You want to print out a report on that in a nicely form.

Input

• First line: integer n (the number of comments)
• The next n lines, each line specify a comment. Line i + 1 for 1<=i<=n specifies the i-th comment. In this line, there is an integer p and a string s (consiting of a - z and an underline (_) whose length is at most 30). This comment replies to the p-th comment. If p=0, this comment replies to the status itself. The string s is the comment text.

Input example