PAT Judge

本博客的代码的思想和图片参考：好大学慕课浙江大学陈越老师、何钦铭老师的《数据结构》

10-排序5 PAT Judge   (25分)

The ranklist of PAT is generated from the status list, which shows the scores of the submissions. This time you are supposed to generate the ranklist for PAT.

Input Specification:

Each input file contains one test case. For each case, the first line contains 3 positive integers, NNN (≤104\le 10^4≤10​4​​), the total number of users, KKK (≤5\le 5≤5), the total number of problems, and MMM (≤105\le 10^5≤10​5​​), the total number of submissions. It is then assumed that the user id's are 5-digit numbers from 00001 to NNN, and the problem id's are from 1 to KKK. The next line contains KKK positive integers p[i] (i=1, ..., KKK), where p[i] corresponds to the full mark of the i-th problem. Then MMM lines follow, each gives the information of a submission in the following format:

user_id problem_id partial_score_obtained

where partial_score_obtained is either −1-1−1 if the submission cannot even pass the compiler, or is an integer in the range [0, p[problem_id]]. All the numbers in a line are separated by a space.

Output Specification:

For each test case, you are supposed to output the ranklist in the following format:

rank user_id total_score s[1] ... s[K]

where rank is calculated according to the total_score, and all the users with the same total_score obtain the same rank; and s[i] is the partial score obtained for the i-th problem. If a user has never submitted a solution for a problem, then "-" must be printed at the corresponding position. If a user has submitted several solutions to solve one problem, then the highest score will be counted.

The ranklist must be printed in non-decreasing order of the ranks. For those who have the same rank, users must be sorted in nonincreasing order according to the number of perfectly solved problems. And if there is still a tie, then they must be printed in increasing order of their id's. For those who has never submitted any solution that can pass the compiler, or has never submitted any solution, they must NOT be shown on the ranklist. It is guaranteed that at least one user can be shown on the ranklist.

Sample Input:

7 4 20
20 25 25 30
00002 2 12
00007 4 17
00005 1 19
00007 2 25
00005 1 20
00002 2 2
00005 1 15
00001 1 18
00004 3 25
00002 2 25
00005 3 22
00006 4 -1
00001 2 18
00002 1 20
00004 1 15
00002 4 18
00001 3 4
00001 4 2
00005 2 -1
00004 2 0

Sample Output:

1 00002 63 20 25 - 18
2 00005 42 20 0 22 -
2 00007 42 - 25 - 17
2 00001 42 18 18 4 2
5 00004 40 15 0 25 -

• 时间限制：200ms
• 内存限制：64MB
• 代码长度限制：16kB
• 判题程序：系统默认
• 作者：陈越
• 单位：浙江大学

 

算法思想：

Algorithms thoughts:
 *     Using bucket sort latest significant Digit
 *     1.sort id
 *     2.sort perfect solution
 *     3.sort total scores

 

下面是代码：

/*
 * judge.c
 *
 *  Created on: 2017年5月24日
 *      Author: ygh
 * Algorithms thoughts:
 *     Using bucket sort latest significant Digit
 *     1.sort id
 *     2.sort perfect solution
 *     3.sort total scores
 */
#include <stdio.h>
#include <stdlib.h>
#define MAX_QUESTION 5
#define MAX_USER_DIGIT 5
#define MAX_USER 100000

/*
 * The radix of the perfect times,it from 0 to MAX_QUESTION
 */
#define BUCKET_RADIX_PERFECT 6

/*
 * The radix of total score,the value if from 0 to 9
 */
#define BUCKET_RADIX_TOTALSCORE 10
/*
 * The score max digit
 */
#define MAX_DIGIT 6

typedef struct node {
    /*
     * The id of the user
     */
    int id;
    /*
     * A integer array to record the score of
     * each question
     */
    int solution[MAX_QUESTION];

    /*
     * The times about the prefer solution times
     */
    int perfectCouner;

    /*
     * The total score
     */
    int totalScore;

    /*
     * The rank of the user
     */
    int rank;

    int showFlag;

} userArr[MAX_USER];

typedef struct node1 *ptrToSet;
typedef struct node1 {
    /*
     * A array of node to store the user's datas
     */
    userArr arr;
    /*
     * A integer to implement table sort
     */
    int table[MAX_USER];
    /*
     * A integer array record the whole scores of the questions
     */
    int question[MAX_QUESTION];
};

/*
 *Create empty set of users and initialize the
 *solution all to -2 standing for question no submit
 *@param n The quantity of the users
 *@param m The quantity of the question
 */
ptrToSet createEmptySet(int n, int k) {
    ptrToSet set = (ptrToSet) malloc(sizeof(struct node1));
    int i, j;
    for (i = 0; i < n; i++) {
        set->table[i] = i;
        for (j = 0; j < k; j++) {
            set->arr[i].solution[j] = -2;
            set->arr[i].perfectCouner = 0;
            set->arr[i].id = i;
            set->arr[i].showFlag = 0;
        }
    }
    return set;
}

/*
 * Insert question total scores into set
 * @param set A point to point the set of users
 * @param m The quantity of the question
 *
 */
void insertQuestionScore(ptrToSet set, int k) {
    int score, i;
    for (i = 0; i < k; i++) {
        scanf("%d", &score);
        set->question[i] = score;
    }
}

/*
 * Insert user's submit to set
 * If the score is not than before,don't update,otherwise update it
 * If the score is -1,update it into 0.
 * If current score is equal question whole score,<code>perfectCounter</code>
 * increase
 * @param set A point to point the set
 * @param m The quantity of the submit

 */
void insertUser(ptrToSet set, int m) {
    /*
     * @param The id of user,it is a positive integer number
     * @param The id of question,it is a positive integer number
     * @param score The score this submit geting
     */
    int id, qId, score, i;
    for (i = 0; i < m; i++) {
        scanf("%d %d %d", &id, &qId, &score);
        /*
         * Because the index in array begin from zreo
         * In order to be compatible
         */
        id--;
        qId--;
        if (set->arr[id].solution[qId] < score) {
            set->arr[id].solution[qId] = score;
            if (score == set->question[qId]) {
                set->arr[id].perfectCouner++;
            }
        }
    }

}

/*
 * Calculate the total score
 * We don't decrease scores,if the score is negative number
 * we let it to zero and add it.But we need the negative number as
 * a flag when we print the submit result:
 *         1.The use never submitted,print '-'
 *         2.The user submit but don't pass compiler get zeor,but we need
 *             print zero to console
 *        3.If the total score is zero,we don't show them
 */
void calculateTotalSource(ptrToSet set, int n, int k) {
    int i, j;
    int totalScore;
    int scorce;
    for (i = 0; i < n; i++) {
        totalScore = -1;
        for (j = 0; j < k; j++) {
            scorce = set->arr[i].solution[j];
            if (scorce < 0 && totalScore == -1) {
                totalScore = -1;
            } else if (scorce == 0 && totalScore == -1) {
                totalScore = 0;
            } else if (scorce > 0 && totalScore == -1) {
                totalScore = scorce;
            } else if(scorce > 0) {
                totalScore += scorce;
            }
        }
        set->arr[i].totalScore = totalScore;
    }
}

void calculateShowFlag(ptrToSet set, int n) {
    int i;
    for (i = 0; i < n; i++) {
        if (set->arr[i].totalScore > -1) {
            set->arr[i].showFlag = 1;
        } else {
            set->arr[i].showFlag = 0;
            set->arr[i].totalScore = 0;
        }
    }
}

typedef struct node2 *ptrToNode;
typedef struct node2 {
    /*
     * Store the id of the user
     */
    int key;

    /*
     * A point to point next node
     */
    ptrToNode next;

};

/*
 * Define a data structure for bucket head that
 * store the head point and rear point for the elements
 */
typedef struct headNode {
    ptrToNode head, rear;
};

/*
 * Define a array of headNode to store the all buckets
 */
typedef struct headNode bucket[BUCKET_RADIX_TOTALSCORE];

/*
 * radix sort by perfect times in set.The perfect
 * buckets is from 0 to <code>MAX_QUESTION</code>
 * We sort uses according to perfect times DESC
 * @param set A point to point the set
 * @param n The quantity of users
 */
void radixSortByPerfectTimes(ptrToSet set, int n) {
    int di, i;
    ptrToNode temp, list;
    bucket b;
    /*
     * Initialize each bucket head and rear into NULL
     */
    for (i = 0; i < BUCKET_RADIX_PERFECT; i++) {
        b[i].rear = b[i].head = NULL;
    }
    for (i = 0; i < n; i++) {
        di = set->arr[i].perfectCouner;
        temp = (ptrToNode) malloc(sizeof(struct node2));
        temp->key = set->arr[i].id;
        temp->next = NULL;
        if (b[di].head == NULL) {
            b[di].head = b[di].rear = temp;
        } else {
            b[di].rear->next = temp;
            b[di].rear = temp;
        }
    }

    /*
     * Recover the elements has been deal with,using
     * the list to point the head
     */
    list = NULL;
    for (i = 0; i < BUCKET_RADIX_PERFECT; i++) {
        if (b[i].head) {
            b[i].rear->next = list;
            list = b[i].head;
        }
        b[i].head = b[i].rear = NULL;
    }

    /*
     * Set sorted sequence to table
     */
    for (i = 0; i < n; i++) {
        temp = list;
        list = list->next;
        set->table[i] = temp->key;
        free(temp);
    }
}

/*
 * Get the digit by the current number and current needed digit
 * @param x The current number
 * @param d The current digit
 * @return The digit needed
 */
int getDigit(int x, int d) {
    int i;
    int di;
    for (i = 0; i < d; i++) {
        di = x % BUCKET_RADIX_TOTALSCORE;
        x = x / BUCKET_RADIX_TOTALSCORE;
    }
    return di;
}

/*
 * Radix sort by total score
 * @param set A point to point the set
 * @param n The quantity of users
 */
void radixSortByTotalScore(ptrToSet set, int n) {
    int di, d, i, j;
    ptrToNode temp, list;
    bucket b;
    /*
     * Initialize each bucket head and rear into NULL
     */
    for (i = 0; i < BUCKET_RADIX_TOTALSCORE; i++) {
        b[i].rear = b[i].head = NULL;
    }
    for (d = 1; d <= MAX_DIGIT; d++) {
        for (j = 0; j < n; j++) {
            di = getDigit(set->arr[set->table[j]].totalScore, d);
            temp = (ptrToNode) malloc(sizeof(struct node2));
            temp->key = set->table[j];
            temp->next = NULL;
            if (b[di].head == NULL) {
                b[di].head = b[di].rear = temp;
            } else {
                b[di].rear->next = temp;
                b[di].rear = temp;
            }
        }

        /*
         * Recover the elements has been deal with,using
         * the list to point the head
         */
        list = NULL;
        for (i = 0; i < BUCKET_RADIX_TOTALSCORE; i++) {
            if (b[i].head) {
                b[i].rear->next = list;
                list = b[i].head;
            }
            b[i].head = b[i].rear = NULL;
        }

        /*
         * Set sorted sequence to table
         */
        for (i = 0; i < n; i++) {
            temp = list;
            list = list->next;
            set->table[i] = temp->key;
            free(temp);
        }

    }
}

/*
 * Calculate the rank
 */
void calculateRank(ptrToSet set, int n) {
    int rank = 1;
    int totalScore = set->arr[set->table[0]].totalScore;
    int i;
    set->arr[set->table[0]].rank = rank;
    for (i = 1; i < n; i++) {
        if (set->arr[set->table[i]].totalScore == totalScore) {
            set->arr[set->table[i]].rank = rank;
        } else {
            rank = i + 1;
            totalScore = set->arr[set->table[i]].totalScore;
            set->arr[set->table[i]].rank = rank;
        }
    }
}

/*
 * Print the content of the set->table[i]
 */
void toStingTable(ptrToSet set, int n) {
    int i;
    printf("table:");
    for (i = 0; i < n; i++) {
        printf("%d ", set->table[i]);
    }
}

/*
 * Get the digit of a number to print format
 */
int getDiditumber(int num) {
    int counter = 0;
    while (num != 0) {
        num = num / 10;
        counter++;
    }
    return counter;
}

/*
 * Print data to console
 */
void toString(ptrToSet set, int n, int k) {
    int i, j;
    int digit;
    for (i = 0; i < n; i++) {
        if (set->arr[set->table[i]].showFlag == 0) {
            continue;
        }
        printf("%d ", set->arr[set->table[i]].rank);
        digit = getDiditumber(set->arr[set->table[i]].id + 1);
        for (j = 0; j < (MAX_USER_DIGIT - digit); j++) {
            printf("0");
        }
        printf("%d ", set->arr[set->table[i]].id + 1);
        printf("%d ", set->arr[set->table[i]].totalScore);
        for (j = 0; j < k; j++) {
            if (set->arr[set->table[i]].solution[j] ==-2) {
                printf("-");
            } else if(set->arr[set->table[i]].solution[j] ==-1){
                printf("0");
            }else{
                printf("%d",set->arr[set->table[i]].solution[j]);
            }
            if (j == k - 1) {

            } else {

                printf(" ");
            }
        }
        printf("\n");
    }
}

int main() {
    int n, k, m;
    scanf("%d %d %d", &n, &k, &m);
    ptrToSet set = createEmptySet(MAX_USER, k);
    insertQuestionScore(set, k);
    insertUser(set, m);
    n = MAX_USER;
//    toString(set, n, k);
    calculateTotalSource(set, n, k);
    calculateShowFlag(set, n);
    radixSortByPerfectTimes(set, n);
    radixSortByTotalScore(set, n);
    calculateRank(set, n);
    toString(set, n, k);
    return 0;
}

The code pass all test points perfectly