#include <iostream>
using namespace std;
int main(void){
    const int N_MAX=1e5;
    long long N,M,K,A[N_MAX],B[N_MAX],Asum=0,Bsum=0;
    char op;
    cin >> N >> M >> K >> op;
    for(int i=0;i<M;i++){
        cin >> B[i];Bsum+=B[i];
        Bsum%=K;
    }
    for(int i=0;i<N;i++){
        cin >> A[i];Asum+=A[i];
        Asum%=K;
    }
    if(op=='+') cout << (Asum*M+Bsum*N)%K << endl; 
    else cout << (Asum*Bsum)%K << endl;
    return 0;
}