Sort Books by Dewey Decimal and Title

You are given a list of books where each book is represented by a string in the format title,DDN, where DDN is the Dewey Decimal Number. Your task is to sort the books primarily in ascending order of their Dewey Decimal numbers. When two or more books have the same Dewey Decimal number, they should be sorted in alphabetical order based on their titles.

Note: All comparisons on titles are case-sensitive. Ensure that you read from standard input (stdin) and output the result to standard output (stdout).

The sorting criteria can be formally expressed as:

$$\text{{Sort Key}} = \left( \text{{Dewey Decimal Number}}, \text{{Book Title}} \right) $$

inputFormat

The first line contains an integer n, representing the number of books.

The following n lines each contain a book description in the format title,DDN, where DDN is a floating-point number.

outputFormat

Output the sorted book titles, one per line, in the order determined by the sorting criteria.

## sample

1
The Great Gatsby,823.912

The Great Gatsby

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