int main() {
unsigned int N;
cin >> N;
for (ui i = 0; i < N; i++) {
ui height;
cin >> height;
heights.push_back(height);
}
//sort(ALL(heights), std::greater<int>());
ui max = 0;
for (ui i = 0; i < heights.size(); i++) {
ui path = dfs(i, 0);
if (path > max)
max= path;
}
cout << max << endl;
/*
cout << N << endl;
for (auto x : heights)
cout << x << "-";
cout << endl;
*/
return 0;
}
void init_page_id_offsets() {
goto_arena();
CompressedFileReader offset_reader("page_id_stats", SMALL_CHUNK);
offset_reader.read_ulong();
for ( ui i = 0 ; i < number_of_files; i++ ) {
page_id_offsets.push_back(offset_reader.read_ulong());
}
}