摘要： DescriptionColonel has n badges. He wants to give one badge to every of his n soldiers. Each badge has a coolness factor, which shows how much it's ow... 阅读全文

摘要： DescriptionA group of N people wishes to go across a river with only one boat, which can at most carry two persons. Therefore some sort of shuttle arr... 阅读全文

摘要： Description There are many unsolvable problem in the world.It could be about one or about zero.But this time it is about bigger number. Given an inte... 阅读全文

摘要： Description从m个不同元素中取出n (n ≤ m)个元素的所有组合的个数，叫做从m个不同元素中取出n个元素的组合数。组合数的计算公式如下:C(m, n) = m!/((m - n)!n!)现在请问，如果将组合数C(m, n)写成二进制数，请问转这个二进制数末尾有多少个零。Input第一行是... 阅读全文