제출 #875944

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
875944	2023-11-20 20:15:24	rainboy	Tax Evasion (LMIO19_mokesciai)	C11	100 / 100	57 ms	36524 KiB

mokesciai

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#include <stdio.h>
#include <stdlib.h>
#define N 200000
int min(int a, int b) { return a < b ? a : b; }
int *ej[N], eo[N];
void append(int i, int j) {
  int o = eo[i]++;
  if (o >= 2 && (o & o - 1) == 0)
    ej[i] = (int *) realloc(ej[i], o * 2 * sizeof *ej[i]);
  ej[i][o] = j;
}
int qu[N], pp[N], dd[N], rr[N];
void dfs1(int p, int i, int d) {
  int o;
  qu[d] = i;
  pp[i] = p, dd[i] = d, rr[i] = d == 0 ? -1 : qu[d / 2 + 1];
  for (o = eo[i]; o--; ) {
    int j = ej[i][o];
    dfs1(i, j, d + 1);
  }
}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

mokesciai.c: In function 'append':
mokesciai.c:13:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   13 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
mokesciai.c: In function 'main':
mokesciai.c:69:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
mokesciai.c:73:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |   scanf("%d", &i), i--;
      |   ^~~~~~~~~~~~~~~
mokesciai.c:78:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |   scanf("%d", &i), i--;
      |   ^~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 22 / 22
• Subtask 3: 39 / 39
• Subtask 4: 29 / 29