A1000,A100,A1=map(int,raw_input().split())
Db =int(raw_input())
B1000,B100,B1=map(int,raw_input().split())
Dc = int(raw_input())
C1000,C100,C1=map(int,raw_input().split())

dp = [[[-1 for i in xrange(101)] for j in xrange(11)] for k in xrange(10001)]
dp[A1000*1000+A100*100+A1][A1000][A100]=0
ans = 0
for tot in range(A1000*1000+A100*100+A1,-1,-1):
    for At in range(11):
        for Ah in range(101):
            Ao = tot-At*1000-Ah*100
            dist = dp[tot][At][Ah]
            if dist < 0:
                continue
            ans = max(ans,dist)
            for at in range(min(At,Db/1000)+1):
                for ah in range( max(0,(Db-at*1000-Ao+99)/100), min(Ah,max(0,(Db-at*1000)/100))+1):
                    ao=Db-at*1000-ah*100
                    if at > At or ah > Ah or ao > Ao:
                        print at,At,ah,Ah,ao,Ao
                    #print "see",At-at+B1000,Ah-ah+B100,Ao-ao+B1
                    Nt,Nh,No = At-at+B1000, Ah-ah+B100,Ao-ao+B1
                    Ntot = Nt*1000+Nh*100+No
                    dp[Ntot][Nt][Nh] = max(dp[Ntot][Nt][Nh],dist+1)
            for at in range(min(At,Dc/1000)+1):
                for ah in range( max(0,(Dc-at*1000-Ao+99)/100), min(Ah,max(0,(Dc-at*1000)/100))+1):
                    ao=Dc-at*1000-ah*100
                    if at > At or ah > Ah or ao > Ao:
                        print at,At,ah,Ah,ao,Ao
                    Nt,Nh,No = At-at+C1000, Ah-ah+C100,Ao-ao+C1
                    Ntot = Nt*1000+Nh*100+No
                    dp[Ntot][Nt][Nh] = max(dp[Ntot][Nt][Nh],dist+1)
print ans