#include<cstdio>
#define lim 100002
using namespace std;
int e[lim],h,i,t,S[lim],max,n;
int main (){
	freopen("scmax.in","r",stdin);
	freopen("scmax.out","w",stdout);
	scanf("%d",&n),S[n]=1;
	for(i=1;i<=n;i++)
		scanf("%d",&e[i]);
	for(h=n-1;h>=1;h--){
		max=0;
		for(i=h+1;i<=n;i++)
			if(e[h]<e[i] &&S[i]>max)
				max=S[i];
		S[h]=max+1;
	}
	max=S[1],t=1;
	for(i=1;i<=n;i++)
		if(max<S[i]){
			max=S[i];t=i;
		}
	printf("%d\n%d ",max,e[t]);
	for(i=t+1;i<=n;i++){
		if(e[i]>e[t] && S[i]==max-1){
			printf("%d ",e[i]);
			--max;
		}
	}
	return 0;
}