from itertools import permutations, combinations

N,M,K=(int(x) for x in input().split())
L=[i for i in range(N)]
A=set(map(int, input().split()))
T=[]
for i in range(N):
    a=list(map(int, input().split()))
    T.append(a)

ans=float("inf")
for i in combinations(L, M):
    for j in permutations(i):
        time=0
        L_time=0
        for k in range(1, len(j)):
            time += T[j[k-1]][j[k]]

        if not int(j[-1]+1) in A:
            L_time=float("inf")
            for k in A:
                L_time = min(L_time, T[j[-1]][k-1])

        ans = min(ans, time+L_time)

print(ans)