#include <bits/stdc++.h>
using namespace std;

int main(){
    int N, M, K;
    char op;
    cin >> N >> M >> K >> op;
    vector<int64_t> A(N), B(M);
    for(int i=0; i<M; i++) cin >> B[i];
    for(int i=0; i<N; i++) cin >> A[i];
    int64_t AS = accumulate(A.begin(), A.end(), 0LL) % K;
    int64_t BS = accumulate(B.begin(), B.end(), 0LL) % K;
    int64_t ans;
    if(op == '+'){
        ans = (AS*M + BS*N) % K;
    }else{
        ans = AS * BS % K;
    }
    cout << ans << endl;
    return 0;
}