N = int(input())
P, Q, R = map(int, input().split())
A, B, C = map(int, input().split())
L = 0
D = 0
for x in range(0, N + 1):
    if x % P == A and x % Q == B and x % R == C:
        L = x
        D = D + 1
    break
while L <= N:
    L = L + P * Q * R
    D = D + 1
print(D)