import sys
read=sys.stdin.buffer.read
readline=sys.stdin.buffer.readline
readlines=sys.stdin.buffer.readlines
sys.setrecursionlimit(10**6)
a1000, a100, a1=map(int, readline().split())
db=int(readline())
b1000, b100, b1=map(int, readline().split())
dc=int(readline())
c1000, c100, c1=map(int, readline().split())
dp={}
def solve(x1000, x100, x1):
    if (x1000, x100, x1) in dp:
        return dp[(x1000, x100, x1)]
    ans=0
    b=db
    z1000=min(b//1000, x1000)
    b-=z1000*1000
    z100=min(b//100, x100)
    b-=z100*100
    z1=min(b, x1)
    b-=z1
    if b==0:
        ans=max(ans, solve(x1000-z1000+b1000, x100-z100+b100, x1-z1+b1)+1)
    c=dc
    z1000=min(c//1000, x1000)
    c-=z1000*1000
    z100=min(c//100, x100)
    c-=z100*100
    z1=min(c, x1)
    c-=z1
    if c==0:
        ans=max(ans, solve(x1000-z1000+c1000, x100-z100+c100, x1-z1+c1)+1)
    dp[(x1000, x100, x1)]=ans
    return ans
print(solve(a1000, a100, a1))