N,M,K=map(int,input().split())
opB=list(input().split())
op=opB.pop(0)
B=sum([int(i) for i in opB])
s=0
for _ in range(N):
    A=int(input())
    if op=="*":
        s+=(B*A)
    elif op=="+":
        s+=(B+M*A)
print(s%K)