import sys

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

B = 10 ** 5 + 10

N, S, X, Y, Z = map(int, readline().split())

def gen_A():
    x = S
    for i in range(N):
        yield str(x & 1)
        x = (X * x + Y) % Z

A_str = ''.join(gen_A())

nums = []
for i in range((N + B - 1) // B):
    nums.append(int(A_str[B * i:B * i + B][::-1], 2))

def get(L, R):
    i = L // B
    L -= B * i
    R -= B * i
    if B >= R:
        x = nums[i] >> L
    else:
        x = (nums[i] >> L) ^ (nums[i + 1] << B - L)
    return x & ((1 << R - L) - 1)

def add(L, R, x):
    i = L // B
    L -= B * i
    R -= B * i
    if B >= R:
        nums[i] ^= x << L
        return
    nums[i] ^= (x & ((1 << B - L) - 1)) << L
    nums[i + 1] ^= x >> (B - L)

Q = int(readline())
m = map(int, read().split())
for s, t, u, v in zip(m, m, m, m):
    x = 0
    add(u - 1, v, x)

for i in range(len(nums)):
    nums[i] = bin(nums[i])[2:][::-1]
    nums[i] += '0' * (B - len(nums[i]))

x = ''.join(nums)[:N]
print(x.replace('0', 'E').replace('1', 'O'))