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Time Limit: 2 s Memory Limit: 512 MB Total points: 100

#18805. 树与查询2

Statistics

有 $N$ 个顶点构成的树(无向无环连通图)。顶点编号为 $1$ 到 $N$,边编号为 $1$ 到 $N-1$。

请编写一个程序执行下面两种查询:

  • 1 u v:输出从 $u$ 到 $v$ 路径的代价。
  • 2 u v k:输出从 $u$ 到 $v$ 路径上第 $k$ 个顶点。$k$ 不超过路径上包含的顶点个数。

输入格式

第一行给出 $N$ ($2 \le N \le 100{,}000$)。

接下来 $N-1$ 行,每行给出第 $i$ 条边连接的两个顶点编号 $u$ 和 $v$ 以及边的代价 $w$。

下一行给出查询个数 $M$ ($1 \le M \le 100{,}000$)。

接下来 $M$ 行,每行给出一个查询。

边的代价是始终不超过 $1{,}000{,}000$ 的自然数。

输出格式

按顺序每行输出一个查询的结果。

样例

输入 1

6
1 2 1
2 4 1
2 5 2
1 3 1
3 6 2
2
1 4 6
2 4 6 4

输出 1

5
3

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