N,M,K = [int(zz) for zz in input().split()]
B = [zz for zz in input().split()]

s = B[0]
B = sum([int(zz) for zz in B[1:]])
def calc(s,a,b):
    if s == '+':
        return a*M+b
    elif s == '*':
        return a*b

tmp = 0
for i in range(N):
    a = int(input())
    tmp += calc(s,a,B)

print(tmp%K)