#define _CRT_SECURE_NO_WARNINGS
#include "bits/stdc++.h"
using namespace std;

unsigned long long A[210000];
unsigned long long C[21000];

#define move 5

int main() {
	int N, S, X, Y, Z;
	scanf("%d %d %d %d %d", &N, &S, &X, &Y, &Z);
	int pre = S;
	int BIT = (1 << move) - 1;
	for (int i = 0; i < N; i++)
	{
		int abase = i >> move;
		int apos = i & BIT;
		if (pre % 2) A[abase] |= 1ULL << apos;
		pre = (int)(((long long)X * pre + Y) % Z);
	}

	int Q;
	scanf("%d", &Q);

	for (int l = 0; l < Q; l++)
	{

		int sk, tk, uk, vk;
		scanf("%d %d %d %d", &sk, &tk, &uk, &vk);
		sk--; tk--; uk--; vk--;
		int sb, sp, tb, tp, ub, up, vb, vp;
		sb = sk >> move;
		sp = sk & BIT;
		tb = tk >> move;
		tp = tk & BIT;

		ub = uk >> move;
		up = uk & BIT;
		vb = vk >> move;
		vp = vk & BIT;

		for (int i = ub; i <= vb; i++)
		{
			C[i - ub] = 0;
		}

		int cp = up;
		int cb = 0;

		for (int i = sb; i <= tb; i++)
		{
			int target = BIT;
			if (i == tb) target = tp;

			while (sp <= target){
				int len = min(target - sp + 1, BIT - cp + 1);
				C[cb] |= (((1UL << len) - 1) & (A[i] >> sp)) << cp;

				sp += len;
				cp += len;
				if (cp > BIT){
					cb++;
					cp = 0;
				}
			}
			sp = 0;
		}

		for (int i = ub; i <= vb; i++)
		{
			A[i] ^= C[i - ub];
		}

	}

	for (int i = 0; i < N; i++)
	{
		int b = i >> move;
		int p = i & BIT;
		if ((A[b] >> p) & 1) printf("O");
		else printf("E");
	}
	printf("\n");
}