یه سوال الگوریتم 200 امتیازی هم حل کردم :)
یه استرینگ بزرگ داده شده و باید از اون تعداد استرینگهایی که از a تشکیل شدند و طولشون هم بزرگتر مساوی 2 باشه رو پیدا کنیم.
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