#include <cstdio>
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <string>
#include <cstring>
#include <sstream>
#include <algorithm>
#include <functional>
#include <queue>
#include <stack>
#include <cmath>
#include <iomanip>
using namespace std;
inline int toInt(string s) { int v; istringstream sin(s); sin >> v; return v; }
template<class T> inline string toString(T x) { ostringstream sout; sout << x; return sout.str(); }
template<class T> inline T sqr(T x) { return x*x; }
typedef pair<int, int> P;
typedef long long ll;
typedef unsigned long long ull;

#define rep(i,n)  for(int (i) = 0;(i) < (n);(i)++)
#define clr(a) memset((a), 0 ,sizeof(a))
#define mclr(a) memset((a), -1 ,sizeof(a))
#define all(a)  (a).begin(),(a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define sz(a) (sizeof(a))
#define Fill(a,v) fill((int*)a,(int*)(a+(sz(a)/sz(*(a)))),v)
bool cheak(int x, int y, int xMax, int yMax){ return x >= 0 && y >= 0 && xMax > x && yMax > y; }
const int dx[4] = { -1, 0, 1, 0 }, dy[4] = { 0, 1, 0, -1 };
const int mod = 1000000007;
const int INF = 2147483647;

int dp[11][101][10001];

int main()
{
	int a1000,a100,a1;
	int d[2];
	int b1000[2],b100[2],b1[2];

	cin >> a1000 >> a100 >> a1;
	rep(i, 2){
		cin >> d[i];
		cin >> b1000[i] >> b100[i] >> b1[i];
	}

	Fill(dp,-(INF-1));
	dp[a1000][a100][0] = a1;

	for (int k = 0;; k++){
		bool end = 1;
		for (int i = 10;i >= 0;i--)
		for (int j = 100; j >= 0; j--){

			rep(l, 2){

				int u1000 = min(i,d[l] / 1000);
				int u100  = min(j,(d[l] - u1000 * 1000) / 100);
				int u1    = d[l] - u1000 * 1000 - u100 * 100;
				if (u1 > dp[i][j][k])continue;
				end = 0;

				dp[i - u1000 + b1000[l]][j - u100 + b100[l]][k + 1] = max(dp[i - u1000 + b1000[l]][j - u100 + b100[l]][k + 1],dp[i][j][k] - u1 + b1[l]);
			}
		}
		if (end){cout << k << endl;return 0;}
	}


	return 0;
}