#include <bits/stdc++.h>

typedef long long ll;
typedef unsigned long long ull;

#define FOR(i,a,b) for(int (i)=(a);i<(b);i++)
#define REP(i,n) FOR(i,0,n)
#define RANGE(vec) (vec).begin(),(vec).end()

using namespace std;

array<int,3> A,B,C;
int Db,Dc;
ll dp[11][101][10001];

class StrangeErrand {
public:
    ll calc(int a, int b, int c) {
        if (dp[a][b][c] >= 0)
            return dp[a][b][c];
        ll maxCnt = 0;
        REP(i,a+1)
        REP(j,b+1)
        {
            int restDb = Db - i*1000 - j*100;
            int restDc = Dc - i*1000 - j*100;

            if (restDb >= 0 && restDb <= c)
                maxCnt = max(calc(a-i+B[0],b-j+B[1],c-restDb+B[2])+1, maxCnt);
            if (restDc >= 0 && restDc <= c)
                maxCnt = max(calc(a-i+C[0],b-j+C[1],c-restDc+C[2])+1, maxCnt);
        }
        return dp[a][b][c] = maxCnt;
    }
    void solve(void) {
        REP(i,3) cin>>A[i];
        cin>>Db;
        REP(i,3) cin>>B[i];
        cin>>Dc;
        REP(i,3) cin>>C[i];

        REP(i,11)
        REP(j,101)
        REP(k,10001)
            dp[i][j][k] = -1;
        cout<<calc(A[0],A[1],A[2])<<endl;
    }
};

#if 1
int main(int argc, char *argv[])
{
        ios::sync_with_stdio(false);
        auto obj = new StrangeErrand();
        obj->solve();
        delete obj;
        return 0;
}
#endif