#include<cstdio>

int n,i,max,maxim,j,poz;
int a[100005];
int lung[100005];

void read(){
	
	int i;
	scanf("%d",&n);
	for(i=1;i<=n;i++)
		scanf("%d",&a[i]);
	
}

int main(){
	
	freopen("scmax.in","r",stdin);
	freopen("scmax.out","w",stdout);
	
	read();
	
	lung[n]=1;
	poz=n;
	
	for(i=n-1;i>=1;i--){
		
		max=0;
		for(j=i+1;j<=n;j++)
			if(a[i]<a[j] && lung[j]>max)
				max=lung[j];
		
		lung[i]=max+1;
		if(max+1>maxim){
			maxim=max+1;
			poz=i;
		}
		
	}
	
	printf("%d\n%d ",maxim,a[poz]);
	
	poz++;
	maxim--;
	while(maxim){
		
		if(lung[poz]!=maxim) poz++;
		else{
			printf("%d ",a[poz]);
			maxim--;
		}
		
	}
	
	return 0;
	
}