on test 2：
input：
```cpp
12 3
1 2 16
1 3 17
3 4 19
4 5 8
5 6 7
1 7 19
1 8 2
7 9 18
5 10 0
7 11 11
5 12 7
16
13
29
```
output：
```cpp
NAY
NAY
AYE
```
answer:
```cpp
AYE
NAY
AYE
```
by NaCly_Fish @ 2019-01-07 19:18:29
A掉了。。只是因为solve的地方把v错写成u了。。然后又T又WA
by NaCly_Fish @ 2019-01-07 19:27:06
%%%%dalao
by L_M_ @ 2019-02-18 14:51:01