from sys import setrecursionlimit
setrecursionlimit(10**6)

def check(x1000, x100, x1, d, d1000, d100, d1):
    m = d // 1000
    if m <= x1000:
        d %= 1000
        x1000 -= m
    else:
        d -= x1000 * 1000
        x1000 = 0
    m = d // 100
    if m <= x100:
        d %= 100
        x100 -= m
    else:
        d -= x100 * 100
        x100 = 0
    if d <= x1:
        x1 -= d
        x1000 += d1000
        x100 += d100
        x1 += d1
        return True, x1000, x100, x1
    else:
        return False, -1, -1, -1

def dfs(x1000, x100, x1):
    ret = 0
    flg,b1000,b100,b1 = check(x1000, x100, x1, Db, B1000, B100, B1)
    if flg:
        ret = max(ret, dfs(b1000, b100, b1) + 1)
    flg,c1000,c100,c1 = check(x1000, x100, x1, Dc, C1000, C100, C1)
    if flg:
        ret = max(ret, dfs(c1000, c100, c1) + 1)
    memo[x1000, x100, x1] = ret
    return ret

A1000,A100,A1 = map(int,input().split())
Db = int(input())
B1000,B100,B1 = map(int,input().split())
Dc = int(input())
C1000,C100,C1 = map(int,input().split())
memo = {}
print(dfs(A1000, A100, A1))