include[HTML_REMOVED]

#include[HTML_REMOVED]
using namespace std;
const int N = 1010;
int a[N], f[N], ans;
int main() {
int n;
cin >> n;
for (int i = 1; i <= n; i) cin >> a[i];
for (int i = 1; i <= n; i) {
f[i] = 1;
for (int j = 1; j < i; j++) {
if (a[j] < a[i]) f[i] = max(f[i], f[j] + 1);
}
ans = max(ans, f[i]);
}
cout << ans;
return 0;
}