Problem Description Lindsay is a shopaholic. Whenever there is a discount of the kind where you can buy three items and only pay for two, she goes completely mad and feels a n…

Problem Description When shopping on Long Street, Michael usually parks his car at some random location, and then walks to the stores he needs. Can you help Michael choose a p…

Problem Description As you know, Gardon trid hard for his love-letter, and now he's spending too much time on choosing flowers for Angel. When Gardon entered the flower shop, …

Problem Description Are you excited when you see the title "AC" ? If the answer is YES , AC it ; You must learn these two combination formulas in the school . If you have forg…

Problem Description In the new year party, everybody will get a "special present".Now it's your turn to get your special present, a lot of presents now putting on the desk, an…

Problem Description Happy new year to everybody! Now, I want you to guess a minimum number x betwwn 1000 and 9999 to let (1) x % a = 0; (2) (x+1) % b = 0; (3) (x+2) % c = 0; a…

Problem Description 8600的手机每天消费1元，每消费K元就可以获赠1元，一开始8600有M元，问最多可以用多少天？ Input 输入包括多个测试实例.每个测试实例包括2个整数M, k，（2 <= k <= M <= 1000).M = 0, k = 0代表输入结束. Output 对于每个测试实例输出一个整数…

Problem Description HDU's 50th birthday, on Octorber 21st, is coming. What an exciting day!! As a student of HDU, I always want to know how many days are there between today a…

Problem Description 大家常常感慨，要做好一件事情真的不容易，确实，失败比成功容易多了！ 做好“一件”事情尚且不易，若想永远成功而总从不失败，那更是难上加难了，就像花钱总是比挣钱容易的道理一样。 话虽这样说，我还是要告诉大家，要想失败到一定程度也是不容易的。比如，我高中的时候，就有一个神奇的女生，在英语考试的时候，竟然把40个单项…

Prepared for New Acmer Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Problem Description 集训进行了将近2个礼拜，这段时间以恢复性训练为主，我一直在密切关注大家的训练情况，目前为止，对大家的表…