摘要：
Problem DescriptionZYB played a game named NumberBomb with his classmates in hiking:a host keeps a number in [1,N] in mind,then players guess a number... 阅读全文
摘要：
Problem DescriptionAfter getting 600 scores in NOIP ZYB(ZJ−267) begins to work with biological questions.Now he give you a simple biological questions... 阅读全文