@[疯狂的阿飘](/user/302459)
输入：
```
4011
1 79990
7999 10
-1 -1
10
```
输出：
```
-20
```
by luogu_gza @ 2022-07-11 12:16:54
@[acwing_gza](/user/301255)
谢谢数据支持,已经AC了！
by 疯狂的阿飘 @ 2022-07-13 16:44:23
@[acwing_gza](/user/301255)
不,其实没有AC只是本地手打测试过了而已。。。。。。
by 疯狂的阿飘 @ 2022-07-13 16:52:32