#include <cstdio>

using namespace std;
int n,i,j,a[100003],v[100003],b[100003],maxi,p,m;
int main()
{freopen("scmax.in","r",stdin);
freopen("scmax.out","w",stdout);
scanf("%d",&n);
for(i=1;i<=n;i++)scanf("%d",&v[i]);
a[n]=1;
for(i=n-1;i>=1;i--){
maxi=0;
for(j=i+1;j<=n;j++)
if(v[i]<v[j] && a[j]>maxi){
maxi=a[j];
b[i]=j;
}
a[i]=maxi+1;
if(a[i]>m){m=a[i];p=i;}
}
printf("%d\n%d ",m,v[p]);
m--;
for(i=p+1;i<=n;i++)
if(v[i]>v[p] && a[i]==m){
printf("%d ",v[i]);
p=i;
m--;
}

    return 0;
}