$\operatorname{2.in:}$
```
5
99 94 91 88 88 71 70 63 60 56 45 45 43 40 32 23 13 13 8 7 -1
99 91 89 72 58 54 50 49 45 23 21 20 17 16 15 14 13 3 2 1 -1
86 82 81 70 66 62 61 60 52 37 29 24 17 14 13 11 3 1 -1
87 84 79 77 74 72 60 53 51 48 43 41 40 36 32 28 28 25 18 8 -1
76 71 52 36 35 22 4 3 -1
```
$\operatorname{2.out:}$
```
299
```
by AC_CSP @ 2022-09-28 16:45:46
@[AC_CSP](/user/481527) 谢谢
by 想象未来 @ 2022-09-28 17:14:31