#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

int D[2], BC[2][3], dp[11][101][10001];

int f(int a, int b, int c){
    int &x = dp[a][b][c];
    if(x != -1)return x;
    x = 0;
    int sm = a*1000 + b*100 + c;
    rep(i, 2)if(sm >= D[i]){
        int aa = a, bb = b, cc = c, y, s = D[i];
        y = min(s / 1000, a);
        aa -= y;
        s -= y * 1000;
        y = min(s / 100, b);
        bb -= y;
        s -= y * 100;
        y = min(s, c);
        cc -= y;
        s -= y;
        if(s == 0){
            aa += BC[i][0];
            bb += BC[i][1];
            cc += BC[i][2];
            smax(x, f(aa, bb, cc) + 1);
        }
    }
    return x;
}

int main(){
    int a, b, c;
    cin >> a >> b >> c;
    
    rep(i, 2){
        cin >> D[i];
        rep(j, 3)cin >> BC[i][j];
    }
    
    MEM(dp, -1);
    int ans = f(a, b, c);
    cout << ans << endl;
}