N, M, L = map(int, input().split())
bs = []
c = 0
for i in range(N+1):
    if i == 0:
        X = input().split()
        e = X[0] == '+'
        b = sum(list(map(int, X[1:])))
        continue
    c += int(input())
if e:
    print((b*N+c*M)%L)
else:
    print(b*c%L)