#include <iostream>
#include <memory>
#include <cstring>
#define N_MAX 2000000

using namespace std;

int main()
{
	int N, S, X, Y, Z, Q, T, U, V, *A, *B;
	cin >> N >> S >> X >> Y >> Z >> Q;
	A = new int[N];
	B = new int[N];
	A[0] = S;

	for (int i = 1; i < N; ++i)
		A[i] = (X*A[i - 1] + Y) % Z;

	for (int i = 0; i < Q; ++i)
	{
		cin >> S >> T >> U >> V;
		memcpy(B + S - 1, A + S - 1, sizeof(int)*(T - S + 1));

		for (int k = U - 1; k < V; ++k)
		{
			A[k] ^= B[k - U + S];
		}
	}

	for (int i = 0; i < N; ++i)
	{
		if (A[i] & 1)
			cout << 'O';
		else
			cout << 'E';
	}

	return 0;
}