样例输入
```
1 3 1
7
0 -5 -3
1 1 1 3
```
样例输出
```
-35
```
你的输出
```
0
```
具体原因还在找。
by eigw22h619 @ 2022-11-05 18:36:07
@[__vector__](/user/507348)
代码139行if前少了else
by eigw22h619 @ 2022-11-05 18:43:40
@[eigw22h619](/user/295864) 谢 dalao
by __vector__ @ 2022-11-05 18:50:09
@[eigw22h619](/user/295864) 大佬 厉害！
by yyy1004 @ 2022-11-06 11:52:22