h, w, k = map(int, input().split())


t = input().split()
ope, X = t[0], list(map(int, t[1:]))
Y = [int(input()) for i in range(h)]

sm = 0
for i in range(h):
    for j in range(w):
        if ope == "+":
            sm = (sm + Y[i] + X[j]) % k
        else:
            sm = (sm + Y[i] * X[j]) % k

print(sm)