#include <fstream>

using namespace std;

int main()
{
    ifstream fin("scmax.in");
    ofstream fout("scmax.out");
    long long a,b,n,i,s[100000],counter=0,gasit=0;
    fin>>n;
    fin>>a;
    s[0]=a;
    for(i=1; i<n; i++)
    {
        fin>>b;
        if(b!=a)
        {
            if(b>a)
            {
                counter++;
                if(gasit==1){gasit=0;s[counter]=a;counter++;}
                s[counter]=b;
            }
            else {gasit=1;counter=-1;}
        }
        a=b;
    }
    fout<<counter+1<<"\n";
    fout<<s[0];
    for(i=1; i<=counter; i++)
        fout<<" "<<s[i];
    return 0;
}