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


int A[3], B[3], C[3];
int now[3];
int DB, DC;

bool useB(){
	int nokori = DB;
	int use0 = min(now[0], nokori / 1000);
	nokori -= use0 * 1000;
	int use1 = min(now[1], nokori / 100);
	nokori -= use1 * 100;
	int use2 = min(now[2], nokori / 1);
	nokori -= use2 * 1;
	if (nokori != 0) return false;
	now[0] += B[0] - use0;
	now[1] += B[1] - use1;
	now[2] += B[2] - use2;
}

bool useC(){
	int nokori = DC;
	int use0 = min(now[0], nokori / 1000);
	nokori -= use0 * 1000;
	int use1 = min(now[1], nokori / 100);
	nokori -= use1 * 100;
	int use2 = min(now[2], nokori / 1);
	nokori -= use2 * 1;
	if (nokori != 0) return false;
	now[0] += C[0] - use0;
	now[1] += C[1] - use1;
	now[2] += C[2] - use2;
}

int main() {
	cin >> A[0] >> A[1] >> A[2];
	cin >> DB;
	cin >> B[0] >> B[1] >> B[2];
	cin >> DC;
	cin >> C[0] >> C[1] >> C[2];

	int ans = 0;
	for (int i = 0; i <= 10000; i++)
	{
		for (int j = 0; j < 3; j++)
		{
			now[j] = A[j];
		}
		int nokori = i;
		int count = 0;
		while (1){
			if (nokori > 0 && useB()){
				count++; nokori--;
			}
			else if (useC()) count++;
			else break;
		}
		ans = max(ans, count);
	}

	for (int i = 0; i <= 10000; i++)
	{
		for (int j = 0; j < 3; j++)
		{
			now[j] = A[j];
		}
		int nokori = i;
		int count = 0;
		while (1){
			if (nokori > 0 && useC()){
				count++; nokori--;
			}
			else if (useB()) count++;
			else break;
		}
		ans = max(ans, count);
	}
	cout << ans << endl;
}