Submission #25890

#	Time	Username	Problem	Language	Result	Execution time	Memory
25890		bugmenot111	medians (balkan11_medians)	C11	100 / 100	39 ms	2092 KiB

medians

#include <stdio.h>
#include <stdbool.h>
#define MAXN 100100
#define update_min() while(used[++minimum])
#define update_max() while(used[--maximum])
int main(void) {
	static int n, a[MAXN], b[MAXN];
	static bool used[2 * MAXN];
	scanf("%d", &n);
	int minimum = 0, maximum = 2 * n;
	used[2 * n] = true;
	used[0] = true;
	for(int i = 1; i <= n; i++) scanf("%d", &b[i]);
	used[a[1] = b[1]] = true;
	for(int i = 2; i <= n; i++) {
		if(b[i] == b[i - 1]) {
			update_min();
			a[2 * i - 2] = minimum, used[minimum] = true;
			update_max();
			a[2 * i - 1] = maximum, used[maximum] = true;
		}
		if(b[i] > b[i - 1]) {
			if(used[b[i]] == false) {
				a[2 * i - 2] = b[i];
				used[b[i]] = true;
				update_max();
				a[2 * i - 1] = maximum, used[maximum] = true;
			} else {
				update_max();
				a[2 * i - 2] = maximum, used[maximum] = true;
				update_max();
				a[2 * i - 1] = maximum, used[maximum] = true;
			}
		}
		if(b[i] < b[i - 1]) {
			if(used[b[i]] == false) {
				a[2 * i - 2] = b[i], used[b[i]] = true;
				update_min();
				a[2 * i - 1] = minimum, used[minimum] = true;
			} else {
				update_min();
				a[2 * i - 2] = minimum, used[minimum] = true;
				update_min();
				a[2 * i - 1] = minimum, used[minimum] = true;
			}
		}
	}
	printf("%d", a[1]);
	for(int i = 2; i < 2 * n; i++) printf(" %d", a[i]);
	return 0;
}

Compilation message (stderr)

medians.c: In function 'main':
medians.c:9:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ^
medians.c:13:30: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 1; i <= n; i++) scanf("%d", &b[i]);
                              ^

• Subtask 1: 65 / 65
• Subtask 2: 35 / 35