N,M,K = map(int,input().split())
B = list(input().split())
OP = B[0]
B = list(map(int, B[1:]))
A = []
for _ in range(N):
    A.append(int(input()))
ANS = 0
if OP=='+':
    for a in A:
        ANS = (ANS+a*M)%K
    for b in B:
        ANS = (ANS+b*N)%K
else:
    SB = sum(B)
    for a in A:
        ANS = (ANS+a*SB)%K
print(ANS)