Submission #545165

#	Time^UTC-0	Username	Problem	Language	Result	Execution time	Memory
545165	2022-04-03 17:56:45	rainboy	Question (Grader is different from the original contest) (CEOI14_question_grader)	C11	100 / 100	3114 ms	24220 KiB

This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.

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#define L 12
#define N 924 /* N = choose(L, L / 2) */
static int cnt[1 << L], bb[N], n, inited = 0;
void init() {
  if (!inited) {
    int b;
    n = 0;
    cnt[0] = 0;
    for (b = 1; b < 1 << L; b++)
      if ((cnt[b] = cnt[b & b - 1] + 1) == L / 2)
        bb[n++] = b;
    inited = 1;
  }
}
int encode(int n, int x, int y) {
  int l;
  init();
  x--, y--;
  for (l = 0; l < L; l++)
    if ((bb[x] & 1 << l) == 0 && (bb[y] & 1 << l) != 0)
      return l + 1;
  return 0;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

encoder.c: In function 'init':
encoder.c:13:28: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   13 |    if ((cnt[b] = cnt[b & b - 1] + 1) == L / 2)
      |                          ~~^~~

decoder.c: In function 'init':
decoder.c:13:28: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   13 |    if ((cnt[b] = cnt[b & b - 1] + 1) == L / 2)
      |                          ~~^~~

Subtask 1100 / 100

#	Verdict	Execution time	Memory	Grader output
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