n,m,k = map(int,input().split())
opb = input().split()
op = opb[0]
b = []
for i in range(1,m+1):
    b.append(int(opb[i]))

a = [int(input()) for i in range(n)]

ans = 0

smb = sum(b)
sma = sum(a)

for i in range(n):
    if op == "+":
        ans += a[i]*m
    else:
        ans += a[i]*smb
    ans %= k

for i in range(m):
    if op == "+":
        ans += b[i]*n
    #else:
    #    ans += b[i]*sma
    ans %= k

print(ans)