def add(a,b):
    return int(a) + int(b)
    
def mul(a,b):
    return int(a) * int(b)

N,M,K = map(int,input().split())
B = input().split()
for i in range(1,M):
    i = int(i)%K
A = [0]
for i in range(N):
    A.append(int(input())%K)

ans = 0
if B[0] == '+':
    for i in range(1,N+1):
        for j in range(1,M+1):
            ans += (add(A[i],B[j])%K)%K
elif B[0] == '*':
    for i in range(1,N+1):
        for j in range(1,M+1):
            ans += (mul(A[i],B[j])%K)%K
print(ans)