1083 List Grades (25 分)

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<bits/stdc++.h>
using namespace std;
const int maxn=1010;
struct node{
    string name;
    string id;
    int grade;
}st[maxn];
bool cmp(node a,node b){
    return a.grade>b.grade;
}
int main(){
    int n,a,b;
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>st[i].name;
        cin>>st[i].id;
        cin>>st[i].grade;
    }
    cin>>a>>b;
    sort(st,st+n,cmp);
    int count=0;
    for(int i=0;i<n;i++){
        if(st[i].grade>=a&&st[i].grade<=b){
            printf("%s %s
",st[i].name.c_str(),st[i].id.c_str());
            count++;
        }
    }
    if(count==0){
        printf("NONE
");
    }
    return 0;
}