#include <cstdio>

using namespace std;

const int MaxV = 100000 ;
const int INFINIT = 2000000001 ;

int v[MaxV] ;
int nr[MaxV] ;

int main()
{
    freopen("scmax.in","r",stdin);
    freopen("scmax.out","w",stdout);
    int cnt = 0 , n , q = 1 ;
    scanf("%d",&n);
    v[n] = INFINIT ;
    for ( int i = 0 ; i < n ; i++ )
    {
        scanf("%d",&v[i]);
    }
    for ( int i = 0 ; i < n ; i++ )
    {
        if ( v[i] < v[i+1] )
        {
            nr[q] = i ;
            q++;
            cnt++;
        }
        else if ( v[i] == v[i+1] ) continue ;
    }
    printf("%d\n",cnt);
    for ( int i = 1 ; i < q ; i++ )
    {
        printf("%d ",v[nr[i]]) ;
    }
    return 0 ;
}