1036 Boys vs Girls (25分)(水)

1036 Boys vs Girls (25分)

This time you are asked to tell the difference between the lowest grade of all the male students and the highest grade of all the female students.

Input Specification:

Each input file contains one test case. Each case contains a positive integer N, followed by N lines of student information. Each line contains a student's name, gender, ID and grade, separated by a space, where name and ID are strings of no more than 10 characters with no space, gender is either F (female) or M (male), and grade is an integer between 0 and 100. It is guaranteed that all the grades are distinct.

Output Specification:

For each test case, output in 3 lines. The first line gives the name and ID of the female student with the highest grade, and the second line gives that of the male student with the lowest grade. The third line gives the difference gradeF−gradeM. If one such kind of student is missing, output Absent in the corresponding line, and output NA in the third line instead.

Sample Input 1:

3

Joe M Math990112 89

Mike M CS991301 100

Mary F EE990830 95

Sample Output 1:

Mary EE990830

Joe Math990112

6

Sample Input 2:

1

Jean M AA980920 60

Sample Output 2:

Absent

Jean AA980920

NA
题目分析：排序题 直接利用STL中sort来写 细心即可

 #define _CRT_SECURE_NO_WARNINGS

 #include <climits>

 #include<iostream>

 #include<vector>

 #include<queue>

 #include<map>

 #include<stack>

 #include<algorithm>

 #include<string>

 #include<cmath>

 using namespace std;

 struct student {

     string name, gender, ID;

     int grade;

 };

 bool compare(const student& a, const student& b)

 {

     return a.grade < b.grade;

 }

 int main()

 {

     vector<student> SM;

     vector<student>SF;

     int N;

     cin >> N;

     string name, gender, ID;

     int grade;

     for (int i = ; i < N; i++)

     {

         cin >> name >> gender >> ID >> grade;

         if (gender == "M")

             SM.push_back({ name,gender,ID,grade });

         else

             SF.push_back({ name,gender,ID,grade });

     }

     sort(SM.begin(), SM.end(), compare);

     sort(SF.begin(), SF.end(), compare);

     if (SF.size() ==  || SM.size() == )

     {

         if (SF.size() == )

         {

             cout << "Absent" << endl;

             if (SM.size() == )

                 cout << "Absent" << endl;

             else

                 cout << (*SM.begin()).name <<" "<<(*SM.begin()).ID<<endl;

         }

         else

         {

             cout << (*(SF.end() - )).name << " " << (*(SF.end() - )).ID << endl;

             if(SM.size()==)

                 cout << "Absent" << endl;

         }

         cout << "NA";

     }

     else

     {

         cout << (*(SF.end() - )).name << " " << (*(SF.end() - )).ID << endl;

         cout << (*SM.begin()).name << " " << (*SM.begin()).ID << endl;

         cout << (*(SF.end() - )).grade - (*SM.begin()).grade;

     }

 }

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