N = int(input())
P, Q, R = map(int, input().split())
A, B, C = map(int, input().split())

x = -1

for k in range(Q):
    now = A + P * k
    if now % Q == B:
        x = now
        break

y = -1
period_pq = P * Q

for k in range(R):
    now = x + period_pq * k
    if now % R == C:
        y = now
        break

period = P * Q * R

if y > N:
    print(0)
else:
    print((N - y) // period + 1)