#include <cstdio>
using namespace std;
FILE *f=fopen("scmax.in", "r"), *g=fopen("scmax.out", "w");
long v[100001], l[100001], a[100001], i, max, pmax, n, j, sw, r[100001];

int main(void)
{
	fscanf(f, "%ld", &n);
	for (i=0;i<=n;i++)
	{
		fscanf(f, "%ld", &v[i]);
		sw=0;
		for (j=1;j<i;j++)
			if (v[i]>=v[j])
				if (l[i]<l[j]+1)
				{
					l[i]=l[j]+1;
					a[i]=j;
					sw=1;
				}
		if (!sw)
			l[i]=1;
		if (l[i]>max)
		{
			max=l[i];
			pmax=i;
		}
	}
	fprintf(g, "%ld\n", max);
	for (i=max;i>0;i--)
	{
		r[i]=v[pmax];
		pmax=a[pmax];
	}
	for (i=1;i<=max;i++)
		fprintf(g, "%ld ", r[i]);
	fclose(f);
	fclose(g);
	return 0;
}