1083. List Grades (25)

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


代码：

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;
struct stu
{
    int score;
    char name[10],id[20];
}s[100000];
bool cmp(stu a,stu b)
{
    return a.score > b.score;
}
int main()
{
    int n,a,b;
    scanf("%d",&n);
    for(int i = 0;i < n;i ++)
    {
        scanf("%s %s %d",s[i].name,s[i].id,&s[i].score);
    }
    scanf("%d%d",&a,&b);
    sort(s,s + n,cmp);
    int c = 0;
    for(int i = 0;s[i].score >= a && i < n;i ++)
    {
        if(s[i].score <= b)
        {
            c ++;
            printf("%s %s
",s[i].name,s[i].id);
        }
    }
    if(!c)printf("NONE");
}