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https://github.com/xlucn/PAT.git
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87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdlib.h>
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typedef struct {
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char id[7], school[7];
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int score;
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} Student;
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typedef struct {
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char name[7];
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int score, num;
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} School;
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int cmp_school(const void *a, const void *b)
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{
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return strcmp((*(Student**)a)->school, (*(Student**)b)->school);
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}
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int cmp_sort_all(const void *a, const void *b)
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{
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School *s1 = *(School**)a, *s2 = *(School**)b;
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if (s1->score - s2->score)
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return s2->score - s1->score;
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else if (s1->num - s2->num)
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return s1->num - s2->num;
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else
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return strcmp(s1->name, s2->name);
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}
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int main()
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{
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int N, M = 0, num = 0;
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double total_score = 0;
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Student students[100001] = {0}, *stu[100001] = {0};
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School schools[100001] = {0}, *sch[100001] = {0};
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/* Read into an array */
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scanf("%d", &N);
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for (int i = 0; i < N; i++) {
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stu[i] = students + i; /* Initialize pointer array */
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scanf("%s %d %s", stu[i]->id, &stu[i]->score, stu[i]->school);
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for (char *s = stu[i]->school; *s; s++)
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*s = tolower(*s); /* Change to lower case */
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}
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/* Sort by school name */
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qsort(stu, N, sizeof(Student*), cmp_school);
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/* Calculate, count and record */
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for (Student **p = stu; p < stu + N; p++) {
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switch((*p)->id[0]) { /* Calculate total score */
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case 'B':
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total_score += (*p)->score / 1.5;
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break;
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case 'A':
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total_score += (*p)->score;
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break;
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case 'T':
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total_score += (*p)->score * 1.5;
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break;
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}
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num++; /* Count number of students */
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if (!*(p + 1) || strcmp((*p)->school, (*(p + 1))->school)) { /* Record into an array */
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sch[M] = schools + M;
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strcpy(sch[M]->name, (*p)->school);
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sch[M]->score = (int)total_score;
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sch[M]->num = num;
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total_score = 0, num = 0, M++; /* Reset and increament counter */
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}
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}
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/* Sort according to rules */
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qsort(sch, M, sizeof(School*), cmp_sort_all);
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/* Print result */
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printf("%d\n", M);
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for (int i = 0, ranking = 0; i < M; i++) {
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if (i > 0 && sch[i]->score < sch[i - 1]->score)
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ranking = i;
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printf("%d %s %d %d\n", ranking + 1, sch[i]->name,
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sch[i]->score, sch[i]->num);
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}
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return 0;
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}
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