def solve(a1,a2,a3):
    if memo[a1][a2][a3] >= 0: return memo[a1][a2][a3]
    res = 0
    if 1000*a1+100*a2+a3 >= Db:
        x1,x2,x3,db = a1,a2,a3,Db
        while x1 and db >= 1000: db -= 1000; x1 -= 1
        while x2 and db >=  100: db -=  100; x2 -= 1
        while x3 and db >=    1: db -=    1; x3 -= 1
        if db == 0: res = max(res, solve(x1+B1, x2+B2, x3+B3)+1)


    if 1000*a1+100*a2+a3 >= Dc:
        x1,x2,x3,db = a1,a2,a3,Db
        while x1 and dc >= 1000: dc -= 1000; x1 -= 1
        while x2 and dc >=  100: dc -=  100; x2 -= 1
        while x3 and dc >=    1: dc -=    1; x3 -= 1
        if dc == 0: res = max(res, solve(x1+C1, x2+C2, x3+C3)+1)
    memo[a1][a2][a3] = res;
    return res;


A1,A2,A3 = map(int,raw_input().split())
Db = int(raw_input())
B1,B2,B3 = map(int,raw_input().split())
Dc = int(raw_input())
C1,C2,C3 = map(int,raw_input().split())
memo = [[[-1]*10001 for i in xrange(101)] for j in xrange(11)]
print solve(A1,A2,A3)