1 #include<iostream>
 2 #include<vector>
 3 #include<algorithm>
 4 #pragma warning(disable : 4996)
 5 
 6 using namespace std;
 7 
 8 struct student
 9 {
10     int sid;
11     int de_grade;
12     int cai_grade;
13     student(int sid, int de_grade, int cai_grade) : sid(sid), de_grade(de_grade), cai_grade(cai_grade)
14     {
15     }  //constructor
16 };
17 
18 bool compare(const student &s1, const student &s2)
19 {
20     int total1 = s1.de_grade + s1.cai_grade, total2 = s2.de_grade + s2.cai_grade;
21     if (total1 != total2)
22         return total1 > total2;
23     else
24         if (s1.de_grade != s2.de_grade)
25             return s1.de_grade > s2.de_grade;
26         else
27             return s1.sid < s2.sid;
28 }
29 
30 int main()
31 {
32     int N, L, H;
33     cin >> N >> L >> H;
34     int cnt = 0;
35     int sid, de_grade, cai_grade;
36     vector<student> v1, v2, v3, v4;
37     for (int i = 0; i != N; ++i)
38     {
39         scanf("%d%d%d", &sid, &de_grade, &cai_grade);
40         if (de_grade >= L && cai_grade >= L)
41         {
42             ++cnt;
43             if (de_grade >= H && cai_grade >= H)
44                 v1.push_back(student(sid, de_grade, cai_grade));
45             else if (de_grade >= H && cai_grade < H)
46                 v2.push_back(student(sid, de_grade, cai_grade));
47             else if (de_grade < H && cai_grade < H && de_grade >= cai_grade)
48                 v3.push_back(student(sid, de_grade, cai_grade));
49             else
50                 v4.push_back(student(sid, de_grade, cai_grade));
51         }
52     }
53     printf("%d\n", cnt);
54     sort(v1.begin(), v1.end(), compare);
55     for (auto &c : v1)
56         printf("%d %d %d\n", c.sid, c.de_grade, c.cai_grade);
57     sort(v2.begin(), v2.end(), compare);
58     for (auto &c : v2)
59         printf("%d %d %d\n", c.sid, c.de_grade, c.cai_grade);
60     sort(v3.begin(), v3.end(), compare);
61     for (auto &c : v3)
62         printf("%d %d %d\n", c.sid, c.de_grade, c.cai_grade);
63     sort(v4.begin(), v4.end(), compare);
64     for (auto &c : v4)
65         printf("%d %d %d\n", c.sid, c.de_grade, c.cai_grade);
66 
67     return 0;
68 }

注意输入输出数据量较大时，不要使用cin与cout，否则会超时