Submission #944505

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
944505	2024-03-12 20:24:32	rainboy	수족관 1 (KOI13_aqua1)	C11	100 / 100	2 ms	600 KiB

aqua1

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#include <stdio.h>
#define N 2500
int main() {
  static int xx[N + 1], yy[N], ll[N], rr[N], pp[N], qu[N];
  static char empty[N];
  int n, k, cnt, i, lower, upper, x, ans;
  scanf("%d%*d%*d", &n), n = n / 2 - 1;
  xx[0] = 0;
  for (i = 0; i < n; i++)
    scanf("%*d%*d%d%d", &xx[i + 1], &yy[i]);
  scanf("%*d%*d");
  cnt = 0;
  for (i = 0; i < n; i++) {
    while (cnt && yy[qu[cnt - 1]] > yy[i])
      cnt--;
    ll[i] = cnt == 0 ? -1 : qu[cnt - 1];
    qu[cnt++] = i;
  }
  cnt = 0;
  for (i = n - 1; i >= 0; i--) {
    while (cnt && yy[qu[cnt - 1]] >= yy[i])
      cnt--;
    rr[i] = cnt == 0 ? n : qu[cnt - 1];
    qu[cnt++] = i;
  }
  for (i = 0; i < n; i++)
    pp[i] = rr[i] == n || ll[i] != -1 && yy[ll[i]] > yy[rr[i]] ? ll[i] : rr[i];
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

aqua1.c: In function 'main':
aqua1.c:30:37: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   30 |   pp[i] = rr[i] == n || ll[i] != -1 && yy[ll[i]] > yy[rr[i]] ? ll[i] : rr[i];
      |                         ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
aqua1.c:10:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |  scanf("%d%*d%*d", &n), n = n / 2 - 1;
      |  ^~~~~~~~~~~~~~~~~~~~~
aqua1.c:13:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   scanf("%*d%*d%d%d", &xx[i + 1], &yy[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
aqua1.c:14:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  scanf("%*d%*d");
      |  ^~~~~~~~~~~~~~~
aqua1.c:31:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |  scanf("%d", &k);
      |  ^~~~~~~~~~~~~~~
aqua1.c:33:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   scanf("%d%*d%*d%*d", &x);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 23 / 23
• Subtask 2: 19 / 19
• Subtask 3: 22 / 22
• Subtask 4: 36 / 36