import java.util.Arrays;
import java.util.Scanner;

class Main {
	public static void main(String[] args) throws Exception {
		new Main().run();
	}
	
	void run() {
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();
		int M=sc.nextInt();
		long K=sc.nextLong();
		char op=sc.next().toCharArray()[0];
		long[] A=new long[N];
		long[] B=new long[M];
		for(int i=0;i<M;++i)B[i]=sc.nextLong();
		for(int i=0;i<N;++i)A[i]=sc.nextLong();
		long sa=0,sb=0;
		for(int i=0;i<N;++i) {sa+=A[i];sa%=K;}
		for(int i=0;i<M;++i) {sb+=B[i];sb%=K;}
		if(op=='+') {
			System.out.println((M*sa%K+N*sb%K)%K);
		}else {
			System.out.println(sa*sb%K);
		}
	}
	
	static void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}

}