Submission #944502

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
944502	2024-03-12 19:56:05	rainboy	택배 (KOI13_delivery)	C11	100 / 100	4 ms	756 KiB

delivery

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#include <stdio.h>
#define N 10000
int min(int a, int b) { return a < b ? a : b; }
unsigned int X = 12345;
int rand_() {
  return (X *= 3) >> 1;
}
int xx[N * 2], cc[N];
void sort(int *ii, int l, int r) {
  while (l < r) {
    int i = l, j = l, k = r, i_ = ii[l + rand_() % (r - l)], tmp;
    while (j < k) {
      int c = xx[ii[j]] != xx[i_] ? xx[ii[j]] - xx[i_] : (i_ & 1) - (ii[j] & 1);
      if (c == 0)
        j++;
      else if (c < 0) {
        tmp = ii[i], ii[i] = ii[j], ii[j] = tmp;
        i++, j++;
      } else {
        k--;
        tmp = ii[j], ii[j] = ii[k], ii[k] = tmp;
      }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

delivery.c: In function 'main':
delivery.c:81:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |  scanf("%*d%d%d", &m, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~
delivery.c:84:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   84 |   scanf("%d%d%d", &xx[i << 1 | 0], &xx[i << 1 | 1], &cc[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 23 / 23
• Subtask 5: 25 / 25