import java.util.*

fun main(args:Array<String>){
    val (n,m,k) = readLine()!!.split(" ").map{it.toInt()}
    val tmp = readLine()!!.split(" ")
    val op = tmp[0]
    val b = tmp.drop(1).map{it.toLong()}
    val a = LongArray(n)
    for(i in 0 until n){
        a[i] = readLine()!!.toLong()
    }
    var ans = 0L
    val suma = a.sum() % k
    val sumb = b.sum() % k
    for(i in 0 until n){
        ans += if (op == "+") a[i] * m else a[i] * sumb
        ans %= k
    }
    for(i in 0 until m) {
        ans += if (op == "+") b[i] * n else 0
        ans %= k
    }
    println(ans)
}