#include<stdio.h>
int a[101],b[101],l[101],prec[101],n;
void solve(){
    int i,j,max,poz,k,aux;
    scanf("%d",&n);
    for(i=1; i<=n; ++i)
        scanf("%d",&a[i]);
    for(i=1; i<=n; ++i){
        k=0;
        max=0;
        for(j=1; j<i; ++j)
            if(a[j]<a[i])
                ++k;
        l[i]=k;
        if(l[i]>max){
            max=l[i];
            poz=i;}
        for(j=i-1; j>0; --j)
            if(l[j]==l[i]-1)
                prec[i]=j;}
    b[max]=a[poz];
    for(i=max-1; i>0; --i){
        aux=prec[poz];
        b[i]=a[aux];
        poz=aux;}
    printf("%d\n",max);
    for(i=1; i<=max; ++i)
        printf("%d ",b[i]);}
int main(){
    freopen("scmax.in","r",stdin);
    freopen("scmax.out","w",stdout);
    solve();
    return 0;}