Given a pair of positive integers, for example, 6 and 110, can this equation 6 = 110 be true? The answer is “yes”, if 6 is a decimal number and 110 is a binary number.
The highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elevator will stop, in specified order. It costs 6 seconds to move the elevator up one floor, and 4 seconds to move down one floor. The elevator will stay for 5 seconds at each stop.
At the beginning of every day, the first person who signs in the computer room will unlock the door, and the last one who signs out will lock the door. Given the records of signing in’s and out’s, you are supposed to find the ones who have unlocked and locked the door on that day.
Input Specification:
Each input file contains one test case. Each case contains the records for one day. The case starts with a positive integer M, which is the total number of records, followed by M lines, each in the format:
ID_number Sign_in_time Sign_out_time
where times are given in the format HH:MM:SS, and ID number is a string with no more than 15 characters.
Output Specification:
For each test case, output in one line the ID numbers of the persons who have unlocked and locked the door on that day. The two ID numbers must be separated by one space.
Note: It is guaranteed that the records are consistent. That is, the sign in time must be earlier than the sign out time for each person, and there are no two persons sign in or out at the same moment.
Sample Input:
3 CS301111 15:30:28 17:00:10 SC3021234 08:00:00 11:25:25 CS301133 21:45:00 21:58:40
Sample Output:
SC3021234 CS301133
Given a non-negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the sum in English.
前言：自己平时不玩ACM，保研需要，也做做题目，练练手，C语言也学得不好，C++就直接没学过。浙大复试通知上也是说只能用C或者C++。所以……
感觉这一周没有做什么。因为就等着招聘问答发布。计划30号发布，结果到9月1号才正式发布出去。前两天跟测了下，因为涉及到我的那几个页面比较简单，没有什么bug，于是就做了另外一个需求，替换掉以前的User大对象，做重构吧，把以前的代码重新划分下模块。然后还做了一个产品那边要的数据。1000个用户的二度人脉的相册统计，并写到文件。这个代码简单，不过耗时很久。程序几乎跑了一天吧。才把所有结果跑出来了。
