Submission #544768

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
544768	2022-04-02 16:36:15	rainboy	Dominance (CEOI08_dominance)	C11	100 / 100	12 ms	380 KiB

dominance

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#include <stdio.h>
#define N 3000
unsigned int X = 12345;
int rand_() {
  return (X *= 3) >> 1;
}
int *zz;
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)
      if (zz[ii[j]] == zz[i_])
        j++;
      else if (zz[ii[j]] < zz[i_]) {
        tmp = ii[i], ii[i] = ii[j], ii[j] = tmp;
        i++, j++;
      } else {
        k--;
        tmp = ii[j], ii[j] = ii[k], ii[k] = tmp;
      }
    sort(ii, l, i);
    l = k;
  }
}
 
 
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Compilation message (stderr)

dominance.c: In function 'main':
dominance.c:41:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |  scanf("%d%d%d", &w, &h, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
dominance.c:46:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |   scanf("%s%d%d%d", s, &x, &y, &rr[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100