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

N1 = pow(Q*R, -1, P)%P
N2 = pow(R*P, -1, Q)%Q
N3 = pow(P*Q, -1, R)%R

x = (A*Q*R*N1 + B*R*P*N2 + C*P*Q*N3)%(P*Q*R)

print((N-x)//(P*Q*R)+1 if x <= N else 0)