N=int(input())
p,q,r=map(int,input().split())
a,b,c=map(int,input().split())
z=a
for x in range(10**7):
    y=p*x+z
    if y%q==b:
        z=y
        break
for x in range(10**7):
    y=p*q*x+z
    if y%r==c:
        z=y
        break
if z<=N:
    print((N-z)//(p*q*r)+1)
else:
    print(0)