@[chen_zhe](/space/show?uid=8457)
by 初嫁QAQ @ 2019-10-08 08:11:09
希望能添加一组数据，针对K==4的情况
输入
8 4
0 0
10 1
8 10000
9 10001
1000 3
1001 4
10000 2
10001 7
输出
17
by damocris @ 2019-11-14 13:40:56
NOI给的数据想桃子呢
by Eastern @ 2020-01-13 14:38:25