This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
set<int> s;
for(int i = 0; i < n; i++) {
int a;
cin >> a;
auto it = s.lower_bound(-a);
if(it != s.end())
s.erase(it);
s.insert(-a);
}
cout << s.size() << endl;
return 0;
}
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