请问样例解释是什么意思啊

P2850 [USACO06DEC] Wormholes G

$$\tt 3 + 4 - 8 = -1$$
by zhoukangyang @ 2020-07-15 13:51:47


为什么是-8呢@[zhoukangyang](/user/173660)
by pengyule @ 2020-07-15 13:52:26


@[pengyule](/user/300078) 因为进入虫洞时间会减少啊
by zhoukangyang @ 2020-07-15 13:52:57


`3 1 3`不是说虫洞有3个道路有1条吗
by pengyule @ 2020-07-15 13:56:48


然后他是样例2解释,输入是n,m,w
by pengyule @ 2020-07-15 13:57:32


所以大概1 2 3和2 3 4都是虫洞吧
by pengyule @ 2020-07-15 13:58:04


@[zhoukangyang](/user/173660) 是这样吗
by pengyule @ 2020-07-15 13:58:23


@[pengyule](/user/300078) 两组数据分别是 3 3 1 1 2 2 1 3 4 2 3 1 3 1 3 和 3 2 1 1 2 3 2 3 4 3 1 8
by littleKtian @ 2020-07-15 13:59:39


oops看花眼了 谢谢您哈,不好意思浪费大家时间了
by pengyule @ 2020-07-15 14:00:41


眼花+1(~~抬走吧~~)
by C琉璃 @ 2021-09-10 11:00:58


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