摘要：Given two positive integers a and b,find suitable X and Y to meet the conditions: X+Y=a Least Common Multiple (X, Y) =bInputInput includes multiple se 阅读全文

摘要：We have a special convex that all points have the same distance to origin point. As you know we can get N segments after linking the origin point and 阅读全文

摘要：A box contains black balls and a single red ball. Alice and Bob draw balls from this box without replacement, alternating after each draws until the r 阅读全文

摘要：In this problem, we will define a graph called star graph, and the question is to find the minimum distance between two given nodes in the star graph. 阅读全文

摘要：There are nnn rectangles on the plane. The problem is to find the area of the union of these rectangles. Note that these rectangles might overlap with 阅读全文

摘要：Let SSS be a sequence of integers s1s_{1}s​1​​, s2s_{2}s​2​​, ........., sns_{n}s​n​​ Each integer is is associated with a weight by the following rul 阅读全文

摘要：You are given a list of train stations, say from the station 111 to the station 100100100. The passengers can order several tickets from one station t 阅读全文

摘要：描述 You are given a list of integers a0, a1, …, a2^k-1. You need to support two types of queries: 1. Output Minx,y∈[l,r] {ax∙ay}. 2. Let ax=y. 输入 The f 阅读全文

摘要：描述 Ming is going to travel for n days and the date of these days can be represented by n integers: 0, 1, 2, …, n-1. He plans to spend m consecutive da 阅读全文

摘要：大侦探福尔摩斯接到一张奇怪的字条：“我们约会吧！ 3485djDkxh4hhGE 2984akDfkkkkggEdsb s&hgsfdk d&Hyscvnm”。大侦探很快就明白了，字条上奇怪的乱码实际上就是约会的时间“星期四 14:04”，因为前面两字符串中第1对相同的大写英文字母（大小写有区分）是 阅读全文

摘要：设计函数求一元多项式的导数。（注：xn（n为整数）的一阶导数为n*xn-1。） 输入格式：以指数递降方式输入多项式非零项系数和指数（绝对值均为不超过1000的整数）。数字间以空格分隔。 输出格式：以与输入相同的格式输出导数多项式非零项的系数和指数。数字间以空格分隔，但结尾不能有多余空格。注意“零多项 阅读全文

摘要：卡拉兹(Callatz)猜想已经在1001中给出了描述。在这个题目里，情况稍微有些复杂。 当我们验证卡拉兹猜想的时候，为了避免重复计算，可以记录下递推过程中遇到的每一个数。例如对n=3进行验证的时候，我们需要计算3、5、8、4、2、1，则当我们对n=5、8、4、2进行验证的时候，就可以直接判定卡拉兹 阅读全文