N,F = map(int, input().split()) A = list(map(int, input().split())) B = list(map(int, input().split())) C = list(map(int, input().split())) now = 1 for i in range(N): now = (now << A[i]) | (now << B[i]) | (now << C[i]) #print(now) print(now.bit_count())