Miko Miko Suika

Time Limit: 2 Seconds
Memory Limit: 65536 KB

As the only oni (a kind of fabulous creature with incredible strength and power) currently living on the surface of *Gensokyo*, *Ibuki Suika* started to lodge at the *Hakurei Shrine* due to some events. The current miko (means shrine maiden or priestess) in the shrine is *Hakurei Reimu*, who is known as the laziest miko during the history of *Gensokyo*.

Being the miko of *Hakurei Shrine*, *Reimu* manages the *Hakurei Border of Gensokyo* and often goes out to exterminate troublemakers. However, after *Suika* came to live, *Reimu's* nature of laziness was exposed and she often asks *Suika* to finish missions instead of her.

One day, *Suika* is flying in the *Bamboo Forest of the Lost*, and she finds herself surrounded by `N` monsters which look like white balls of fur. The monsters are called *Kedamas*. For the `i`-th *Kedama*, *Suika* needs to consume `A`_{i} units of power to wipe it out. Of course, *Suika* can easily exterminate all of them, but it is a waste of power. Nevertheless, she finds that there are `M` useful items, which can help her restore the power. For the `i`-th item, if *Suika* gets it, she will restore *B*_{i} units of power. So *Suika* decides to eliminate some of the *Kedamas*, collect the items and maximize her power in the end.

The *Bamboo Forest of the Lost* can be regarded as a two-dimensional plane, and *Suika* can be considered as a point at (0,0). The *Kedamas* can be regarded as convex polygons, and it is assured that they would not intersect or overlap with each other. The items also can be regarded as points on the plane. Different items may have same coordinates. Neither *Suika* nor the items will locate inside any *Kedamas* or on the boundaries of them. No items will appear at (0,0).

If the segment between an item and *Suika* does not intersect with any *Kedamas*, she can get the item directly. Otherwise, she need to attack some *Kedamas* to clear out a way to get the item. If the segment between *Suika* and any points of a *Kedama* does not intersect with other *Kedamas*, she can spend power to exterminate it.

*Suika* was a little drunk, so she found it difficult to quickly and precisely calculate the maximal power she will get. Please help her to calculate it.

#### Input

There are multiple test cases (no more than 100). For each test case:

The first line contains two integers `N` and `M` (1 <= `N`, `M` <= 400). The next line contains `N` integers `A`_{i} and the following line contains `M` integers `B`_{i} (1 <= `A`_{i}, `B`_{i} <= 1000).

Then followed by `N` lines. Each lines starts with a integer `C`_{i} (1 <= `C`_{i} <= 20), indicates the number of edges of the `i`-th *Kedama*. Following 2 * `C`_{i} real numbers indicates the coordinate of the *j*-th vertex, in the format of `X`_{i1} Y_{i1} X_{i2} Y_{i2} .. X_{iCi} Y_{iCi}. The vertices are given in clockwise order.

The last `M` lines, each line contains two real numbers representing the coordinate of the *i*-th item. The absolute value of all real numbers will be no more than 1000.

#### Output

For each test case, output the maximal power *Suika* could get.

#### Sample Input

2 1
3 4
5
4 1.0 1.0 1.0 2.0 2.0 2.0 2.0 1.0
4 -1.0 -1.0 -2.0 -1.0 -2.0 -2.0 -1.0 -2.0
3.0 3.0

#### Sample Output

2

Author:

**WANG, Xiajun**
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