2897：英文缩写词 给定一个由若干英文单词组成的字符串，生成一个由各首字母组成的缩写词（acronym），其中的the，a，an，of，for及and被忽略。

2895：

循环小数



给定一个分数，判断其是否是一个无限循环小数，并输出它的第一个循环节

2531：

乘船



春暖花开，实验室集体去长风公园泛舟。

实验室有n(1<=N<=2000)个人，每个人重量为ci.长风公园的每艘船的载重量为K,每次最多乘两人。假设每个人只能坐一次船，那么至少需要多少艘船才能让实验室全体都泛舟一次?

2019：

加密1



对一个整数(32位无符号整数)进行规则如下的加密：

1. 低16位和高16位互换

2. 此时的低16位按位取反

3. 此时的高16位与低16位进行异或运算，结果存储到高16位

写出一个程序对指定的整数进行加密

2009：

查询Ⅱ



先给你若干个数，然后问你某些数是否给你过。

-2897: English acronym to set a string of a number of English words generated by the first letter acronym (acronym), the, a, an, of, for and and is ignored.

2895:

Recurring decimal



Given a score, to determine whether it is an infinite recurring decimal, and outputs its first loop section

2531:

Boat



Spring, the laboratory collective Changfeng Park boating.

Laboratory n (1 <= N <= 2000) individuals, each person weighs ci the load capacity of each vessel of the Changfeng Park K, a maximum multiply the two. Assume that each person can only take a boat, you need at least the number of vessels in order to allow the laboratory of all boating time?

2019:

1-Encryption



An integer (32-bit unsigned integer) encryption rules are as follows:

(1) the low 16 and 16 interchange

(2) low 16 bitwise

3 XOR of the 16 high and 16 low at this time, the result is stored into the high 16

Write a program to encrypt a given integer

2009:

Query Ⅱ



Give you a number and then ask yo