摘要：
Sasha and Kolya decided to get drunk with Coke, again. This time they have k types of Coke. i-th type is characterised by its carbon dioxide concentra 阅读全文
摘要：
Something happened in Uzhlyandia again... There are riots on the streets... Famous Uzhlyandian superheroes Shean the Sheep and Stas the Giraffe were c 阅读全文
摘要：
http://codeforces.com/gym/100623/attachments A题 题意：有n个球(0~n-1)先放在A个盒子（0~A-1）里面，然后将（0~n-1）放在B个盒子（0~B-1），问abs（A盒子所在位置-B盒子所在位置）的和是多少？ 思路：现将小球分成两部分（1.k个A与 阅读全文