Problem6863--Dire Wolf

6863: Dire Wolf

[Creator : ]
Time Limit : 1.000 sec  Memory Limit : 256 MiB

Description

Dire wolves, also known as Dark wolves, are extraordinarily large and powerful wolves. Many, if not all, Dire Wolves appear to originate from Draenor.
Dire wolves look like normal wolves, but these creatures are of nearly twice the size. These powerful beasts, 8 - 9 feet long and weighing 600 - 800 pounds, are the most well-known orc mounts. As tall as a man, these great wolves have long tusked jaws that look like they could snap an iron bar. They have burning red eyes. Dire wolves are mottled gray or black in color. Dire wolves thrive in the northern regions of Kalimdor and in Mulgore.
Dire wolves are efficient pack hunters that kill anything they catch. They prefer to attack in packs, surrounding and flanking a foe when they can.
— Wowpedia, Your wiki guide to the World of Warcra

Matt, an adventurer from the Eastern Kingdoms, meets a pack of dire wolves. There are N wolves standing in a row (numbered with 1 to N from left to right). Matt has to defeat all of them to survive.
Once Matt defeats a dire wolf, he will take some damage which is equal to the wolf’s current attack. As gregarious beasts, each dire wolf i can increase its adjacent wolves’ attack by bi. Thus, each dire wolf i’s current attack consists of two parts, its basic attack ai and the extra attack provided by the current adjacent wolves. The increase of attack is temporary. Once a wolf is defeated, its adjacent wolves will no longer get extra attack from it. However, these two wolves (if exist) will become adjacent to each other now.
For example, suppose there are 3 dire wolves standing in a row, whose basic attacks ai are (3, 5, 7), respectively. The extra attacks bi they can provide are (8, 2, 0). Thus, the current attacks of them are (5, 13, 9). If Matt defeats the second wolf first, he will get 13 points of damage and the alive wolves’ current attacks become (3, 15).
As an alert and resourceful adventurer, Matt can decide the order of the dire wolves he defeats. Therefore, he wants to know the least damage he has to take to defeat all the wolves.


有一排狼,每只狼有一个伤害 $A$,还有一个伤害 $B$。杀死一只狼的时候,会受到这只狼的伤害 $A$ 和这只狼两边的狼的伤害 $B$ 的和。
如果某位置的狼被杀,那么杀它左边的狼时就会收到来自右边狼的 $B$,因为这两只狼是相邻的了。
求杀掉一排狼的最小代价。

Input

The first line contains only one integer $T$, which indicates the number of test cases. 
For each test case, the first line contains only one integer $N\ (2 ≤ N ≤ 200)$.
The second line contains $N$ integers $a_i\ (0 ≤ a_i ≤ 100,000)$, denoting the basic attack of each dire wolf.
The third line contains $N$ integers $b_i\ (0 ≤ b_i ≤ 50,000)$, denoting the extra attack each dire wolf can provide.

Output

For each test case, output a single line “Case #x: y”, where $x$ is the case number (starting from $1$), $y$ is the least damage Matt needs to take.

Sample 1 Input

2
3
3 5 7
8 2 0
10
1 3 5 7 9 2 4 6 8 10
9 4 1 2 1 2 1 4 5 1

Sample 1 Output

Case #1: 17
Case #2: 74
In the first sample, Matt defeats the dire wolves from left to right. He takes 5 + 5 + 7 = 17 points of damage which is the least damage he has to take.

HINT

相同题目:HDU 5115

Source/Category

 基础算法 4.130.区间DP