

Hatsune MikuTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 2193 Accepted Submission(s): 1513 Problem Description Hatsune Miku is a popular virtual singer. It is very popular in both Japan and China. Basically it is a computer software that allows you to compose a song on your own using the vocal package. Today you want to compose a song, which is just a sequence of notes. There are only m different notes provided in the package. And you want to make a song with n notes. Also, you know that there is a system to evaluate the beautifulness of a song. For each two consecutive notes a and b, if b comes after a, then the beautifulness for these two notes is evaluated as score(a, b). So the total beautifulness for a song consisting of notes a_{1}, a_{2}, . . . , a_{n}, is simply the sum of score(a_{i}, a_{i+1}) for 1 ¡Ü i ¡Ü n  1. Now, you find that at some positions, the notes have to be some specific ones, but at other positions you can decide what notes to use. You want to maximize your song¡¯s beautifulness. What is the maximum beautifulness you can achieve? Input The first line contains an integer T (T ¡Ü 10), denoting the number of the test cases. For each test case, the first line contains two integers n(1 ¡Ü n ¡Ü 100) and m(1 ¡Ü m ¡Ü 50) as mentioned above. Then m lines follow, each of them consisting of m spaceseparated integers, the jth integer in the ith line for score(i, j)( 0 ¡Ü score(i, j) ¡Ü 100). The next line contains n integers, a_{1}, a_{2}, . . . , a_{n} (1 ¡Ü a_{i} ¡Ü m, a_{i} ¡Ù 0), where positive integers stand for the notes you cannot change, while negative integers are what you can replace with arbitrary notes. The notes are named from 1 to m. Output For each test case, output the answer in one line. Sample Input
Sample Output
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