n, p, q = list(map(int, input().split()))
A = list(map(int, input().split()))
l = 0
r = 1<<30
while r-l > 1:
    m = (l+r)>>1
    t0 = t1 = 0
    for i in range(3):
        if A[i] < m:
            t0 += m-A[i]
        else:
            t1 += A[i]-m
    t1 += A[3]
    if t0 > t1:
        r = m
    else:
        if p*m + q*t0 <= n:
            l = m
        else:
            r = m
print(l)