PAT甲级——A1083 List Grades

Given a list of N student records with name, ID and grade. You are supposed to sort the records with respect to the grade in non-increasing order, and output those student records of which the grades are in a given interval.

Input Specification:

Each input file contains one test case. Each case is given in the following format:

N
name[1] ID[1] grade[1]
name[2] ID[2] grade[2]
... ...
name[N] ID[N] grade[N]
grade1 grade2

where name[i] and ID[i] are strings of no more than 10 characters with no space, grade[i] is an integer in [0, 100], grade1 and grade2 are the boundaries of the grade's interval. It is guaranteed that all the grades are distinct.

Output Specification:

For each test case you should output the student records of which the grades are in the given interval [grade1, grade2] and are in non-increasing order. Each student record occupies a line with the student's name and ID, separated by one space. If there is no student's grade in that interval, output NONE instead.

Sample Input 1:

4
Tom CS000001 59
Joe Math990112 89
Mike CS991301 100
Mary EE990830 95
60 100

Sample Output 1:

Mike CS991301
Mary EE990830
Joe Math990112

Sample Input 2:

2
Jean AA980920 60
Ann CS01 80
90 95

Sample Output 2:

NONE

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
struct Node
{
    string name, id;
    int grade;
};
int main()
{
    int N, grade1, grade2;
    cin >> N;
    Node* data = new Node[N];
    for (int i = 0; i < N; ++i)
        cin >> data[i].name >> data[i].id >> data[i].grade;
    cin >> grade1 >> grade2;
    sort(data, data + N, [](Node a, Node b) {return a.grade > b.grade; });
    int flag = 1;
    for (int i = 0; i < N; ++i)
    {
        if (data[i].grade < grade1)
            break;
        if (data[i].grade >= grade1 && data[i].grade <= grade2)
        {
            cout << data[i].name << " " << data[i].id << endl;
            flag = 0;
        }
    }
    if (flag == 1)
        cout << "NONE" << endl;
    delete[]data;
    return 0;
}