import math
N=int(input())
P,Q,R=map(int, input().split())
A,B,C=map(int, input().split())
if A==0 and B==0 and C==0:
    print(N//(P*Q*R)+1)
    exit()
for i in range(Q+1):
    if (P*i+A)%Q == B:
        break
a1 = P*i + A
for j in range(R+1):
    if (a1 + P*Q*j) % R == C:
        break
l = P*Q*R
ans = N//l
N%=l
if a1 + P*Q*j <= N:
    ans += 1
print(ans)