package main

import . "fmt"
import . "os"
import bf "bufio"

func main() {
	rd:=bf.NewReader(Stdin)
	var n,m,k int64
	var op string
	Fscan(rd,&n,&m,&k,&op)
	var b, bsum int64
	for i:=0*m; i<m; i++ {
		Fscan(rd,&b)
		bsum = (bsum+b)%k
	}
	var a,ans int64
	if op == "+" {
		ans = n*bsum%k
		for i:=0*n;i<n;i++ {
			Fscan(rd,&a)
			ans = (ans+m*a)%k
		}
	} else {
		for i:=0*n;i<n;i++{
			Fscan(rd,&a)
			ans = (ans+bsum*a)%k
		}
	}
	Println(ans)
}