n,m,k = map(int,input().split())
L = list(input().split())
op = L[0]
B = [int(b) for b in L[1:]]
A = [int(input()) for i in range(n)]
ans = 0
sB = sum(B)%k
for a in A:
    if op == "+":
        ans += m*a+sB
    else:
        ans += a*sB
    ans %= k
print(ans)