package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)

func Scanner() string {
	sc.Scan()
	return sc.Text()
}
func main() {
	buf := make([]byte, 0)
	sc.Buffer(buf, 100000007)
	sc.Split(bufio.ScanWords)
	n, _ := strconv.Atoi(Scanner())
	m, _ := strconv.Atoi(Scanner())
	k, _ := strconv.Atoi(Scanner())
	mark := Scanner()
	ver := make([]int, n)
	side := make([]int, m)
	for i := 0; i < m; i++ {
		side[i], _ = strconv.Atoi(Scanner())
	}
	for i := 0; i < n; i++ {
		ver[i], _ = strconv.Atoi(Scanner())
	}
	if mark == "+" {
		ans := 0
		ans2 := 0
		for i := 0; i < n; i++ {
			ans += ver[i] % k
			ans %= k
		}
		for i := 0; i < m; i++ {
			ans2 += side[i] % k
			ans2 %= k
		}
		fmt.Println((ans*m%k + ans2*n%k) % k)
	} else {
		ans := 0
		for i := 0; i < m; i++ {
			ans += side[i] % k
			ans %= k
		}
		ans2 := 0
		for i := 0; i < n; i++ {
			ans2 += ver[i] * ans % k
			ans2 %= k
		}
		fmt.Println(ans2)
	}
}