N,M,K = map(int,input().split())
L = list(input().split())
op = L[0]
B = list(map(int, L[1:]))
S = sum(B)
A = list(int(input()) for _ in range(N))
ans = 0
for i in range(N):
    if op == '+':
        ans += (A[i] * M) + S
    else:
        ans += A[i] * S
    ans %= K
print(ans)