<ul data-eligibleForWebStory="true"><li>The Weekly Challenge is a coding challenge where participants come up with solutions to two tasks each week.</li><li>Task 1 involves finding the day number of the year for a given date in YYYY-MM-DD format.</li><li>Solutions in Python involve checking the input format, parsing the date, and using date-related modules to compute the day of the year.</li><li>Perl solutions utilize the Date::Calc CPAN module for the same task.</li><li>Examples for Task 1 are given for different dates.</li><li>Task 2 requires decompressing a list of pairs of integers.</li><li>Solutions involve iterating over the list, picking adjacent pairs, and decompressing them by repeating the second element a defined number of times.</li><li>Python and Perl solutions are provided for Task 2.</li><li>Examples for Task 2 demonstrate the decompressed lists for given input lists.</li></ul>

Weekly Challenge

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