#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main() {
    int N, M;
    ll K;
    cin >> N >> M >> K;
    ll A[N], B[M];
    string op;
    cin >> op;
    for (int i = 0; i < M; i++) {
        cin >> B[i];
    }
    ll v = 0;
    for (int i = 0; i < N; i++) {
        cin >> A[i];
        v += A[i];
        v %= K;
    }
    if (op == "+") {
        ll sum = 0;
        for (int i = 0; i < N; i++) {
            sum += A[i] * M;
            sum %= K;
        }
        for (int i = 0; i < M; i++) {
            sum += B[i] * N;
            sum %= K;
        }
        cout << sum << "\n";
    } else {
        ll sum = 0;
        for (int i = 0; i < M; i++) {
            sum += v * B[i];
            sum %= K;
        }
        cout << sum << "\n";
    }
    return 0;
}