import sys, time, random, heapq, math, itertools
from collections import deque, Counter, defaultdict
#from sortedcontainers import SortedSet, SortedList
from bisect import bisect, bisect_left, bisect_right
import heapq as hq
from functools import cache, cmp_to_key
def debug(*x):print('debug:',*x, file=sys.stderr)
sys.setrecursionlimit(300000)
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
inf = 2 ** 61 - 1
mod = 998244353

N,M,K = mi()
A = set(a - 1 for a in li())
T = [li() for _ in range(N)]

ans = inf
for bit in range(1<<N):
    if bit.bit_count() != M:
        continue
    l = [i for i in range(N) if (bit >> i) & 1]
   
    for p in itertools.permutations(l):
        cnt = 0
        for i in range(len(p) - 1):
            cnt += T[p[i]][p[i+1]]
        last = p[-1]
        if last in A:
            ans = min(ans, cnt)
        else:
            for a in A:
                ans = min(ans, cnt + T[last][a])

print(ans)