#include "bits/stdc++.h"
using namespace std;

#define REP(i, n) for(int i=0; i<(n); i++)
struct D { int i, j, k; D(){}; D(int _i, int _j, int _k):i(_i),j(_j),k(_k){}; };

int N,T;
int dp[21][211][21111];
int A[3], B[3], C[3];
int Db, Dc;
signed main()
{
    REP(i,3) cin >> A[i];
    cin >> Db;
    REP(i,3) cin >> B[i];
    cin >> Dc;
    REP(i,3) cin >> C[i];

    REP(c,10001) REP(i,c/1000 + 1) REP(j,(c-i*1000)/100 + 1) {
        int k = c - i * 1000 - j * 100;
        int bi = min(i, Db / 1000);
        int bj = min(j, (Db - bi*1000) / 100);
        int bk = Db - bi * 1000 - bj * 100;
        if (k >= bk) {
            int ni = i - bi + B[0];
            int nj = j - bj + B[1];
            int nk = k - bk + B[2];
            dp[i][j][k] = max(dp[i][j][k], dp[ni][nj][nk] + 1);
        }
        int ci = min(i, Dc / 1000);
        int cj = min(j, (Dc - ci*1000) / 100);
        int ck = Dc - ci * 1000 - cj * 100;
        if (k >= ck) {
            int ni = i - ci + C[0];
            int nj = j - cj + C[1];
            int nk = k - ck + C[2];
            dp[i][j][k] = max(dp[i][j][k], dp[ni][nj][nk] + 1);
        }
    }
    cout << dp[A[0]][A[1]][A[2]] << endl;
    return 0;
}