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
#include<bits/stdc++.h> using namespace std; int main(){ int n; int h,m,s; char sep; string id; cin>>n; map<int,string> in,out; while(n--){ cin>>id; cin>>h>>sep>>m>>sep>>s; in[h*3600+m*60+s]=id; cin>>h>>sep>>m>>sep>>s; out[h*3600+m*60+s]=id; } map<int,string>::iterator it; cout<<(in.begin())->second<<" "<<(--(out.end()))->second; }
这里总结一下输入时碰到非空格或换行的分隔符的操作方法:
1.若使用scanf的话,比较简单,而且运算速度也比cin输入流要快
如该题可用scanf("%d:%d:%d",&h,&m,&s);来读取
2.若使用cin输入流来读取,则需要再定义一个分隔符来对数据区域进行划分,具体实现如上述代码所示
标签:25,sep,cin,Sign,records,1006,out,Out From: https://www.cnblogs.com/coderhrz/p/16586572.html