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#define _CRT_SECURE_NO_WARNINGS

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define MAX_SIZE 1000
#define MAX_QUESTION_SIZE 10
typedef struct
{
	char studentID[11];
	char questionID[50];
	char submitDate[11];
	char submitTime[10];
	int result;
} LOG;

void readExamDetail(char lstExamQuestions[][50], int* numQuestions)
{
	int index = 0;
	char nextLine[255];
	while (1)
	{
		fgets(nextLine, sizeof(nextLine), stdin);
		nextLine[strcspn(nextLine, "\r\n")] = 0;

		if (strcmp(nextLine, "-1") == 0) break;

		strcpy(lstExamQuestions[index], nextLine);

		index++;
	}
	*numQuestions = index;
}

int readLog(LOG* logArr)
{
	int lineCount = 0;
	char nextLine[255];
	while (1)
	{
		fgets(nextLine, sizeof(nextLine), stdin);
		nextLine[strcspn(nextLine, "\r\n")] = 0;

		if (strcmp(nextLine, "-1") == 0) break;

		sscanf(nextLine, "%s %s %s %s %d", logArr[lineCount].studentID,
			logArr[lineCount].questionID, logArr[lineCount].submitDate,
			logArr[lineCount].submitTime, &logArr[lineCount].result);

		lineCount++;
	}
	return lineCount;
}

int numberofSubmits(LOG* logArr, int size) {
	int count = 0;
	for (int i = 0; i < size; i++) {
		count++;
		for (int j = i - 1; j >= 0; j--) {
			if (strcmp(logArr[j].studentID, logArr[i].studentID) == 0) {
				count--;
				break;
			}
		}
	}
	return count;
}

int getResultofStudentId(char lstExamQuestions[][50], int numQuestions, LOG* logArr, int size, const char* studentID) {
	int sum = 0;
	for (int i = 0; i < numQuestions; i++) {
		int temp = 0;
		for (int j = 0; j < size; j++) {
			if (strcmp(logArr[j].studentID, studentID) == 0) {
				if (strcmp(logArr[j].questionID, lstExamQuestions[i]) == 0 && logArr[j].result > temp) {
					temp = logArr[j].result;
				}
			} 
		}
		sum += temp;
	}
	return sum;	
}

void printStudentExamDetail(char lstExamQuestions[][50], int numQuestions, LOG* logArr, int size, const char* studentID) {
	int *mark = (int *)calloc(MAX_SIZE, sizeof(int));
	
	for (int i = 0; i < numQuestions; i++) {
		int temp = 0;
		int index = 0;
		int check = 0; // check xem cau hoi nay no co trong cai log khong
		for (int j = 0; j < size; j++) {
			if (strcmp(logArr[j].studentID, studentID) == 0) {
				if (strcmp(logArr[j].questionID, lstExamQuestions[i]) == 0 && logArr[j].result > temp) {
					temp = logArr[j].result;
					index = j;
					check = 1;
				}
			} 
		}
		if (check) mark[index]++;
	}
	
	for (int i = 0; i < MAX_SIZE; i++) {
		if (mark[i]) {
			printf("%s %s %s %d\n", logArr[i].questionID, logArr[i].submitDate, logArr[i].submitTime, logArr[i].result);
		}
	}
	
	free(mark);
}

void printSubmitStatistic(char lstExamQuestions[][50], int numQuestions, LOG* logArr, int size) {
	for (int i = 0; i < numQuestions; i++) {
		int sum = 0, count = 0;
		
		for (int j = 0; j < size; j++) {
			if (strcmp(logArr[j].questionID, lstExamQuestions[i]) == 0) {
				sum += logArr[j].result;
				count++;
			}
		}

		double average = 0.00;
		if (count == 0) average == 0.00;
		else average = (double)sum / count;
		
		printf("%s %d %.2lf\n", lstExamQuestions[i], count, average);
	}
}

void getStudentResult(char lstExamQuestions[][50], int numQuestions, LOG* logArr, int size)
{
	char nextStudentID[255];
	while (1)
	{
		fgets(nextStudentID, sizeof(nextStudentID), stdin);
		nextStudentID[strcspn(nextStudentID, "\r\n")] = 0;

		if (strcmp(nextStudentID, "$") == 0) break;

		int result = getResultofStudentId(lstExamQuestions, numQuestions, logArr, size, nextStudentID);
		printf("StudentId %s result %d\n", nextStudentID, result);
	}
}
void getStudentSubmitDetail(char lstExamQuestions[][50], int numQuestions, LOG* logArr, int size)
{
	char nextStudentID[255];
	while (1)
	{
		fgets(nextStudentID, sizeof(nextStudentID), stdin);
		nextStudentID[strcspn(nextStudentID, "\r\n")] = 0;

		if (strcmp(nextStudentID, "$") == 0) break;

		printStudentExamDetail(lstExamQuestions, numQuestions, logArr, size, nextStudentID);
	}
}
int main()
{
	char lstExamQuestions[10][50];
	int lstQuestionSize = 0;
	LOG* logArr = NULL;
	int size;
	logArr = (LOG*)malloc(MAX_SIZE * sizeof(LOG));
	char nextCommand[100];
	while (1)
	{
		fgets(nextCommand, sizeof(nextCommand), stdin);
		nextCommand[strcspn(nextCommand, "\r\n")] = 0;
		if (strlen(nextCommand) == 0) continue;
		if (nextCommand[0] != '?') break;
		if (strcmp(&nextCommand[2], "loadLogSubmit") == 0) {
			size = readLog(logArr);
		}
		else if (strcmp(&nextCommand[2], "loadExamQuestions") == 0) {
			readExamDetail(lstExamQuestions, &lstQuestionSize);
			printf("Number of Questions: %d\n", lstQuestionSize);
		}
		else if (strcmp(&nextCommand[2], "numberofSubmits") == 0) {
			printf("Number of submit: %d\n", numberofSubmits(logArr, size));
		}
		else if (strcmp(&nextCommand[2], "getSubmitStatistic") == 0) {
			printSubmitStatistic(lstExamQuestions, lstQuestionSize, logArr, size);
		}
		else if (strcmp(&nextCommand[2], "getStudentResults") == 0) {
			getStudentResult(lstExamQuestions, lstQuestionSize, logArr, size);
		}
		else if (strcmp(&nextCommand[2], "getStudentSubmitDetail") == 0) {
			getStudentSubmitDetail(lstExamQuestions, lstQuestionSize, logArr, size);
		}

	}

	free(logArr);
	return 0;
}