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#include <bits/stdc++.h>
using namespace std;
#define MAXN 100000
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int dp[MAXN + 1];
int v[MAXN + 1];
stack<int> st;
int main(){
int n,i,j,poz,mx,ind;
fin >> n;
for (i = 1; i <= n; i ++){
fin >> v[i];
dp[i] = 1;
}
mx = 0;
poz = 1;
for (i = 2; i <= n; i ++){
for (j = 1; j <= i - 1; j ++){
if (v[j] < v[i] && dp[j] + 1 > dp[i])
dp[i] = dp[j] + 1;
}
if (dp[i] > mx){
mx = dp[i];
poz = i;
}
}
ind = poz;
st.push(v[poz]);
for (i = poz - 1; i >= 1; i --){
if (dp[i] == dp[ind] - 1 && v[i] < v[ind]){
st.push(v[i]);
ind = i;
}
}
fout << st.size() << '\n';
while (!st.empty()){
fout << st.top() << ' ';
st.pop();
}
fin.close();
fout.close();
return 0;
}