Submission #904197

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
904197	2024-01-11 22:04:49	rainboy	Robot Race (CPSPC17_race)	C11	0 / 100	41 ms	52048 KiB

Main

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 1000
#define M 1000
#define Q 1000000
#define INF 0x3f3f3f3f
int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }
void append(int **ej, int *eo, 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 tt[N * M + 1][2], pp[N * M + 1], sz[N * M + 1];
int dir(int u) {
  return tt[pp[u]][0] == u ? 0 : 1;
}
int is_root(int u) {
  return pp[u] == 0 || tt[pp[u]][dir(u)] != u;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

Main.c: In function 'append':
Main.c:16:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   16 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
Main.c: In function 'main':
Main.c:98:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |  scanf("%d%d%d", &n, &m, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.c:100:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  100 |   scanf("%s", cc[i]);
      |   ^~~~~~~~~~~~~~~~~~
Main.c:102:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  102 |   scanf("%d%d%d%d", &ii1[h], &jj1[h], &ii2[h], &jj2[h]), ii1[h]--, jj1[h]--, ii2[h]--, jj2[h]--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 80