#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define MAX_STUDENTS 100
#define NAME_LEN 50
typedef struct {
    char id[10];      
    int classs;         
    char name[NAME_LEN]; 
    float scores[3];   
} Student;
Student students[MAX_STUDENTS] = {
    {"10001", 11, "Zhang", {99.5, 88.5, 89.5}},
    {"10002", 12, "Yang", {77.9, 56.5, 87.5}},
    {"10003", 11, "Liang", {92.5, 99.0, 60.5}}
};
int student_count = 3;
int compare_students(const void *a, const void *b) {
    Student *student_a = (Student *)a;
    Student *student_b = (Student *)b;
    if (student_a->classs != student_b->classs) {
        return student_a->classs - student_b->classs;
    }
    float total_a = student_a->scores[0] + student_a->scores[1] + student_a->scores[2];
    float total_b = student_b->scores[0] + student_b->scores[1] + student_b->scores[2];

    return total_b - total_a; 
}
int find_student(char *key) {
    int i;for ( i = 0; i < student_count; i++) {
        if (strcmp(students[i].id, key) == 0 || strcmp(students[i].name, key) == 0) {
            return i;
        }
    }
    return -1;
}
void delete_student(int index) {
    int i ;for ( i = index; i < student_count - 1; i++) {
        students[i] = students[i + 1];
    }
    student_count--;
}
void display_students() {
    qsort(students, student_count, sizeof(Student), compare_students);
    int i;for (i = 0; i < student_count; i++) {
        printf("%s %d %s %.1f %.1f %.1f\n", students[i].id, students[i].classs, students[i].name,
               students[i].scores[0], students[i].scores[1], students[i].scores[2]);
    }
}
int main() {
    char key[NAME_LEN];
    printf("Enter the student ID or name to delete: ");
    scanf("%s", key);

    int index = find_student(key);
    if (index == -1) {
        printf("Student not found.\n");
        display_students();
        return 0;
    }
    printf("Are you sure (yes/no)? ");
    char confirm[5];
    scanf("%s", confirm);

    if (strcmp(confirm, "yes") == 0) {
        
        delete_student(index);
         display_students();
    } else {
        display_students();
    }
    return 0;
}