제출 #550679

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
550679	2022-04-18 19:49:38	rainboy	도로 개발 (JOI15_road_development)	C11	100 / 100	186 ms	26288 KiB

road_development

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 100000
#define Q 300000
int ds[N];
int find(int i) {
  return ds[i] < 0 ? i : (ds[i] = find(ds[i]));
}
void join(int i, int j) {
  i = find(i);
  j = find(j);
  if (i == j)
    return;
  if (ds[i] > ds[j])
    ds[i] = j;
  else {
    if (ds[i] == ds[j])
      ds[i]--;
    ds[j] = i;
  }
}
int *ej[N], eo[N];
void append(int i, int j) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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컴파일 시 표준 에러 (stderr) 메시지

road_development.c: In function 'append':
road_development.c:33:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   33 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
road_development.c: In function 'main':
road_development.c:115:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  115 |  scanf("%d%d", &n, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~
road_development.c:120:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  120 |   scanf("%d%d%d", &tt[h], &ii[h], &jj[h]), ii[h]--, jj[h]--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 25 / 25
• Subtask 5: 15 / 15