Submission #473634

#	Time	Username	Problem	Language	Result	Execution time	Memory
473634		rainboy	Vrtić (COCI18_vrtic)	C11	32 / 160	1 ms	280 KiB

vrtic

#include <stdio.h>

#define N	150

int max(int a, int b) { return a > b ? a : b; }

unsigned int X = 12345;

int rand_() {
	return (X *= 3) >> 1;
}

void sort(int *xx, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, x = xx[l + rand_() % (r - l)], tmp;

		while (j < k)
			if (xx[j] == x)
				j++;
			else if (xx[j] < x) {
				tmp = xx[i], xx[i] = xx[j], xx[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = xx[j], xx[j] = xx[k], xx[k] = tmp;
			}
		sort(xx, l, i);
		l = k;
	}
}

int main() {
	static int pp[N], xx[N];
	int n, i, ans;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d", &pp[i]);
	for (i = 0; i < n; i++)
		scanf("%d", &xx[i]);
	sort(xx, 0, n);
	if (n == 2)
		ans = xx[1] - xx[0];
	else {
		ans = 0;
		for (i = 2; i < n; i++)
			ans = max(ans, xx[i] - xx[i - 2]);
	}
	printf("%d\n", ans);
	for (i = 0; i < n; i += 2)
		printf("%d ", xx[i]);
	for (i = n % 2 == 0 ? n - 1 : n - 2; i >= 0; i -= 2)
		printf("%d ", xx[i]);
	printf("\n");
	return 0;
}

Compilation message (stderr)

vrtic.c: In function 'main':
vrtic.c:36:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
vrtic.c:38:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |   scanf("%d", &pp[i]);
      |   ^~~~~~~~~~~~~~~~~~~
vrtic.c:40:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |   scanf("%d", &xx[i]);
      |   ^~~~~~~~~~~~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 16 / 16
• Subtask 3: 0 / 16
• Subtask 4: 0 / 16
• Subtask 5: 0 / 16
• Subtask 6: 0 / 16
• Subtask 7: 0 / 16
• Subtask 8: 0 / 16
• Subtask 9: 0 / 16
• Subtask 10: 0 / 16