Teyvat

Yoshinow2001 has not logged in the GenshinImpact for a long time, and there are many more Dendroculus on the map of the Teyvat continent.

The map of the GenshinImpact can be seen as an $\textbf{undirected connected graph}$ $G=(V,E)$ of $n$ points, $m$ edges, where each vertex $v\in V$ represents a location on the map, and each edge $e=(v_s,v_t)$ represents a road from the point $v_s$ to $v_t$.

Since Yoshinow2001 has a lot of Dendroculus did not take, so he will give you a total of $Q$ queries, each query indicates that there are $k$ vertexs $\{a_1,a_2,\dots,a_k\}$ on the graph $G$, these vertexs need to take Dendroculus. He wants to know how many vertex pairs $(S,T)$ satisfy $1\leq S\leq T\leq n$ so that any simple path from $S$ to $T$ passes through all vertexs in the set $\{a_1,\dots,a_k\}$ exactly once.

Each test contains multiple test cases.The first line of input contains a single integer $T(1\leq T\leq 1\times 10^4)$----the number of test cases.The description of test cases follows.

The first line contains three integers $n,m,Q(1\leq n\leq 5\times 10^5,1\leq m,Q\leq 1\times 10^6)$ correspondingly represent the number of vertexs, the number of edges, the number of queries.

The following $m$ lines contains two integers $ u_i,v_i ( u_i \neq v_i ) $ indicating an undirected edge between $u_i$ and $v_i$. It is guaranteed that $\forall i,j:1\leq i\lt j\leq m$ satisfy $(u_i,v_i)\neq (u_j,v_j)$.

The following $Q$ lines. Each line begins with an integer $k$, representing the number of vertexs queried. Next $k$ integers $a_1,\dots,a_k$, representing the vertexs.

It is guaranteed that the sum of $n$ for each test cases does not exceed $1.5\times 10^6$, the sum of $m,Q,\sum_{i=1}^{Q}{k_i}$ for each test cases does not exceed $3\times 10^6$.

For each test case, output $Q$ lines, where the $i$-th line contains an integer, representing the answer to the $i$-th query.



Notes:
In this problem, you may need more stack space to pass this problem.
We suggest you to add the following code into your main function if you use C++.

```
int main() {
int size(512<<20); // 512M
__asm__ ( "movq %0, %%rsp\n"::"r"((char*)malloc(size)+size));
// YOUR CODE
...
exit(0);
}

```

And if you use the code above please $\textbf{DON'T forget to add exit(0)}$; in the end of your main function, otherwise your code may get RE.

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1 3
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1 1
2 2 3
3 1 2 3

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2023“钉耙编程”中国大学生算法设计超级联赛（4）