I don't understand problem,please give me some tests.Thank!!!!!!

Here are some tests
~~~~~~~~~~~~
11995=3
11996=4
11997=3
11998=3
11999=4
12000=3
12001=3
12002=2
12003=3
~~~~~~~~~~~~~~
23402=2
23403=3
23404=3
23405=3
23406=3
23407=4
23408=4
23409=1
23410=2
23411=3
~~~~~~~~~~~~~~
59989=3
59990=3
59991=4
59992=3
59993=2
59994=3
59995=3
59996=4
59997=3
59998=3
59999=4
60000=3