#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <utility>

using namespace std;
template <class T>
void show(T &a, string sep = " ") {
	for (auto it = a.begin(); it != a.end(); it++) {
		cout << *it << sep;
	}
	cout << endl;
}

int main() {
	long long n, s, x, y, z, q;

	cin >> n >> s >> x >> y >> z;
	vector<long long> a(n, 0);
	a[0] = s;
	for (int i = 0; i < n; i++) {
		a[i + 1] = (x * a[i] + y) % z;
	}
	// show(a);

	cin >> q;
	long long ss, tt, uu, vv;
	for (int i = 0; i < q; i++) {
		cin >> ss >> tt >> uu >> vv;
		vector<int> b(a.begin() + ss - 1, a.begin() + tt);
		// show(b);
		// printf("%d %lld %d\n", b.size(), vv - uu, b[0]);

		for (int j = uu - 1; j <= vv - 1; j++) {
			a[j] += b[j - uu + 1];
		}
		// show(a);
	}

	for (int i = 0; i < n; i++) {
		cout << (a[i] % 2 ? "O" : "E");
	}
	cout << endl;
	return 0;
}