#include <stdio.h>
 
long n,a[2000005],i,k=1,b[2000005];
 
int main ()
{
    freopen("scmax.in","r",stdin);
    freopen("scmax.out","w",stdout);
    scanf("%ld\n", &n);
    for(i=1;i<=n;i++) scanf("%ld", &a[i]);
    for(i=2;i<=n;i++)
        if(a[i]-a[i-1]>0)
        {
            b[k]=a[i-1];
            k++;
        }
    if(a[n]-a[n-1]>0) b[k]=a[n];
    printf("%ld\n", k);
    for(i=1;i<=k;i++) printf("%ld ", b[i]);
    return 0;
}