Submission #924803

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
924803	2024-02-09 17:18:27	rainboy	주유소 (KOI16_gas)	C11	100 / 100	440 ms	788 KiB

gas

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 2500
#define M 4000
#define INF 0x3f3f3f3f3f3f3f3fLL
long long min(long long a, long long b) { return a < b ? a : b; }
unsigned int X = 12345;
int rand_() {
  return (X *= 3) >> 1;
}
int *ej[N], *ew[N], eo[N];
void append(int i, int j, int w) {
  int o = eo[i]++;
  if (o >= 2 && (o & o - 1) == 0) {
    ej[i] = (int *) realloc(ej[i], o * 2 * sizeof *ej[i]);
    ew[i] = (int *) realloc(ew[i], o * 2 * sizeof *ew[i]);
  }
  ej[i][o] = j, ew[i][o] = w;
}
int cc[N];
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

gas.c: In function 'append':
gas.c:22:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   22 |  if (o >= 2 && (o & o - 1) == 0) {
      |                     ~~^~~
gas.c: In function 'main':
gas.c:93:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
gas.c:95:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   95 |   scanf("%d", &cc[i]);
      |   ^~~~~~~~~~~~~~~~~~~
gas.c:101:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |   scanf("%d%d%d", &i, &j, &w), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 15 / 15
• Subtask 3: 16 / 16
• Subtask 4: 24 / 24
• Subtask 5: 27 / 27