#!/usr/bin/env python3
import operator
def main():
    h, w, k = map(int, input().split())
    op, *b = input().split()
    b = list(map(int, b))
    a = [ int(input()) for _ in range(h) ]
    if op == '+':
        c = (sum(a) * w + sum(b) * h) % k
    elif op == '*':
        c = sum(a) * sum(b) % k
    print(c)
if __name__ == "__main__":
    main()