#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
using namespace std;

const int coin[] = {1000, 100, 1};

bool check(const vector<int>& a, int d)
{
    for(int i=0; i<3; ++i){
        int x = min(a[i], d / coin[i]);
        d -= x * coin[i];
    }
    return d == 0;
}

void sub(vector<int>& a, int d)
{
    for(int i=0; i<3; ++i){
        int x = min(a[i], d / coin[i]);
        d -= x * coin[i];
        a[i] -= x;
    }
}

void add(vector<int>& a, const vector<int>& b)
{
    for(int i=0; i<3; ++i)
        a[i] += b[i];
}

int main()
{
    vector<int> a(3), b(3), c(3);
    int db, dc;
    for(int i=0; i<3; ++i)
        cin >> a[i];
    cin >> db;
    for(int i=0; i<3; ++i)
        cin >> b[i];
    cin >> dc;
    for(int i=0; i<3; ++i)
        cin >> c[i];

    int ret = 0;
    for(int i=0; i<2; ++i){
        int cnt = 0;
        vector<int> x = a;

        for(;;){
            if(check(x, db)){
                sub(x, db);
                add(x, b);
                ++ cnt;
                continue;
            }
            if(check(x, dc)){
                sub(x, dc);
                add(x, c);
                ++ cnt;
                continue;
            }
            break;
        }
        ret = max(ret, cnt);

        swap(db, dc);
        b.swap(c);
    }
    cout << ret << endl;

    return 0;
}