@[Joseph__Joestar](/user/723517)
input:
```
4 2
1 2 3
```
output:
```
0
```
answer:
```
1
```
by olegekei @ 2023-03-06 17:38:01
其实一个循环就够了，在输入数据的同时用前缀和并且找长度为k区间的最大值，最后一减就可以了
by adaldad @ 2023-03-08 21:14:01
@[adaldad](/user/845703)
谢谢
by Joseph__Joestar @ 2023-03-20 16:07:23