#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

ll N, M, K;
ll A[101010], B[101010], col, row;
char op;

int main() {
  cin >> N >> M >> K;
  cin >> op;
  for (int i = 1; i <= M; i++) cin >> B[i];
  for (int i = 1; i <= N; i++) cin >> A[i];
  for (int i = 1; i <= N; i++) row += A[i];
  for (int i = 1; i <= M; i++) col += B[i];
  if (op == '+') {
    cout << (M * row % K + N * col % K) % K << endl; 
  } else {
    cout << (row * col) % K << endl;
  }
  return 0;
}