#include <bits/stdc++.h>
using namespace std;
using LL = long long int;
#define incID(i, l, r) for(int i = (l)    ; i <  (r); i++)
#define decID(i, l, r) for(int i = (r) - 1; i >= (l); i--)
#define incII(i, l, r) for(int i = (l)    ; i <= (r); i++)
#define decII(i, l, r) for(int i = (r)    ; i >= (l); i--)
#define inc(i, n)  incID(i, 0, n)
#define dec(i, n)  decID(i, 0, n)
#define inc1(i, n) incII(i, 1, n)
#define dec1(i, n) decII(i, 1, n)
#define inID(v, l, r) ((l) <= (v) && (v) <  (r))
#define inII(v, l, r) ((l) <= (v) && (v) <= (r))
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define MT make_tuple
#define FI first
#define SE second
#define FR front()
#define BA back()
#define ALL(v) v.begin(), v.end()
#define RALL(v) v.rbegin(), v.rend()
auto setmin   = [](auto & a, auto b) { return (b <  a ? a = b, true : false); };
auto setmax   = [](auto & a, auto b) { return (b >  a ? a = b, true : false); };
auto setmineq = [](auto & a, auto b) { return (b <= a ? a = b, true : false); };
auto setmaxeq = [](auto & a, auto b) { return (b >= a ? a = b, true : false); };
#define SI(v) static_cast<int>(v.size())
#define RF(e, v) for(auto & e: v)
#define until(e) while(! (e))
#define if_not(e) if(! (e))
#define ef else if
#define UR assert(false)
// 以下、入出力関係のテンプレ案のテスト
auto * IS = & cin;
// input elements (as a tuple)
template<typename U, int I> void in_(U & t) { }
template<typename U, int I, typename A, typename ... B> void in_(U & t) { (* IS) >> get<I>(t); in_<U, I + 1, B ...>(t); }
template<typename ... T> auto in() { tuple<T ...> t; in_<tuple<T ...>, 0, T ...>(t); return t; }
// input a array
template<typename T, int N> auto ain() { array<T, N> a; inc(i, N) { (* IS) >> a[i]; } return a; }
// input a (multi-dimensional) vector
// template<typename T> T vin() { return * istream_iterator<T>(* IS); }
template<typename T> T vin() { T v; (* IS) >> v; return v; }
template<typename T, typename N, typename ... M> auto vin(N n, M ... m) {
	vector<decltype(vin<T, M ...>(m ...))> v(n); inc(i, n) { v[i] = vin<T, M ...>(m ...); } return v;
}
// input multi-column (as a tuple of vector)
template<typename U, int I> void colin_(U & t) { }
template<typename U, int I, typename A, typename ... B> void colin_(U & t) {
	// get<I>(t).emplace_back(* istream_iterator<A>(* IS)); colin_<U, I + 1, B ...>(t);
	A a; (* IS) >> a; get<I>(t).push_back(a); colin_<U, I + 1, B ...>(t);
}
template<typename ... T> auto colin(int n) {
	tuple<vector<T> ...> t; inc(i, n) { colin_<tuple<vector<T> ...>, 0, T ...>(t); } return t;
}
auto * OS = & cout;
string SP = " ", LN = "\n";
// output elements
void out() { (* OS) << LN << flush; }
template<typename A                > void out(A && a            ) { (* OS) << a      ; out(     ); }
template<typename A, typename ... B> void out(A && a, B && ... b) { (* OS) << a << SP; out(b ...); }
// output a (multi-dimensional) vector
template<typename T> ostream & operator<<(ostream & os, vector<T> const & v) {
	inc(i, v.size()) { os << (i == 0 ? "" : SP) << v[i]; } return os << flush;
}
template<typename T> void vout_(T && v) { (* OS) << v; }
template<typename T, typename A, typename ... B> void vout_(T && v, A a, B ... b) {
	for(auto && w: v) { vout_(w, b ...); (* OS) << a; }
}
template<typename T, typename ... A> void vout(T && v, A ... a) { vout_(v, a ...); out(); }

// ---- ----

template<typename T> T MV(T v) { return v; }
template<typename T, typename ... U> auto MV(T v, int a, U ... b) { return vector<decltype(MV(v, b ...))>(a, MV(v, b ...)); }

template<typename T, size_t N> istream & operator>>(istream & s, array<T, N> & a) { RF(e, a) { s >> e; } return s; }
template<typename T, size_t N> ostream & operator<<(ostream & s, array<T, N> const & a) {
	inc(i, SI(a)) { s << (i == 0 ? "" : " ") << a[i]; }
	return s;
}

int main() {
	const int M = 10000;
	auto dp = MV<int>(-1, M + 1, M/1000 + 1, M/100 + 1);
	auto sum = [](int x, int y, int z) { return 1000*x + 100*y + 1*z; };
	auto one = [](int s, int x, int y) { return s - (1000*x + 100*y); };
	{
		auto [x, y, z] = ain<int, 3>();
		dp[sum(x, y, z)][x][y] = 0;
	}
	auto v = vin<array<int, 4>>(2);
	
	int ans = 0;
	decII(s, 0, M) {
	decII(x, 0, M/1000) {
	decII(y, 0, M/100) {
		int z = one(s, x, y);
		for(auto [ss, xx, yy, zz]: v) {
			int t = dp[s][x][y];
			if(t == -1) { continue; }
			setmax(ans, t);
			if(s < ss) { continue; }
			int sss = s - ss + sum(xx, yy, zz);
			int X = min(x, ss/1000);
			ss -= X * 1000;
			int Y = min(y, ss/100);
			ss -= Y * 100;
			int Z = min(z, ss/1);
			ss -= Z * 1;
			if(ss != 0) { continue; }
			setmax(dp[sss][x - X + xx][y - Y + yy], t + 1);
		}
	}
	}
	}
	out(ans);
}