没理解,给方程。
by JackMerryYoung @ 2022-03-26 17:13:15
比如样例:
```
1 5
70 100 90 50 1
```
最长路径:$100 \to 90 \to 50 \to 1$
输出应为:
```
4
```
---
题目样例:
```
5 5
1 2 3 4 5
16 17 18 19 6
15 24 25 20 7
14 23 22 21 8
13 12 11 10 9
```
最长路径:$25 \to 24 \to 23 \to 22 \to \cdots \to 2 \to 1$(共 25 个)
输出为:
```
25
```
by kexinluo @ 2022-04-26 21:47:57