n,m,k = map(int,input().split())
op_B = input().split()
op = op_B[0]
B = list(map(int,op_B[1:]))
A = [int(input()) for i in range(n)]
result = 0
for ai in A:
    result2 = 0
    for bi in B:
        result2+=eval(str(ai)+op+str(bi))
    result+=result2
print(result%k)