#include <stdio.h>
#include <string.h>

#define MAX_STUDENTS 3
#define MAX_NAME_LENGTH 20

struct Student {
    char id[MAX_NAME_LENGTH];
    int class;
    char name[MAX_NAME_LENGTH];
    float score1;
    float score2;
    float score3;
};

void printStudent(struct Student student, int isFirst) {
    if (isFirst) {
        printf("%d %s %s %.1f %.1f %.1f\n", student.class, student.id, student.name, student.score1, student.score2, student.score3);
    } else {
        printf("   %s %s %.1f %.1f %.1f\n", student.id, student.name, student.score1, student.score2, student.score3);
    }
}

void printAllStudents(struct Student students[], int count) {
    int isFirst = 1;
    for (int i = 0; i < count; i++) {
        printStudent(students[i], isFirst);
        isFirst = 0;
    }
}

int findStudent(struct Student students[], int count, char* search) {
    for (int i = 0; i < count; i++) {
        if (strcmp(students[i].id, search) == 0) {
            return i;
        }
    }
    return -1;
}

void sortStudents(struct Student students[], int count) {
    int i, j;
    struct Student temp;
    for (i = 0; i < count - 1; i++) {
        for (j = 0; j < count - i - 1; j++) {
            if (students[j].class > students[j + 1].class ||
                (students[j].class == students[j + 1].class && students[j].score1 + students[j].score2 + students[j].score3 < students[j + 1].score1 + students[j + 1].score2 + students[j + 1].score3)) {
                temp = students[j];
                students[j] = students[j + 1];
                students[j + 1] = temp;
            }
        }
    }
}

int main() {
struct 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 studentCount = MAX_STUDENTS;

    char search[MAX_NAME_LENGTH];
    printf("Enter student ID to modify: ");
    scanf("%s", search);

    int index = findStudent(students, studentCount, search);
    if (index != -1) {
        printf("Enter updated student information (class id name score1 score2 score3): ");
        scanf("%d %s %s %f %f %f", &students[index].class, students[index].id, students[index].name, &students[index].score1, &students[index].score2, &students[index].score3);

        sortStudents(students, studentCount);
        printAllStudents(students, studentCount);

        printf("modified\n");
    } else {
        printf("Student not found.\n");
        printAllStudents(students, studentCount);
    }

    return 0;
}