#include <iostream>
#include <string.h>

using namespace std;

int kDebt[2], e1000[2], e100[2], e1[2];

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

int solve(int const kA1000, int const kA100, int const kA1) {
  int& ret = dp[kA1000][kA100][kA1];
  if(ret >= 0) return ret;
  ret = 0;

  for(int i=0;i<2;i++) {
    int a1000 = kA1000, a100 = kA100, a1 = kA1;
    int debt = kDebt[i];
    while(a1000 > 0 && debt >= 1000) { a1000--, debt-=1000; }
    while(a100  > 0 && debt >= 100)  { a100--,  debt-=100;  }
    if(a1 >= debt) { a1 -= debt, debt = 0; }
    if(debt == 0) {
      ret = max(ret, 1+solve(a1000+e1000[i], a100+e100[i], a1+e1[i]));
    }
  }

  return ret;
}

int main() {

  memset(dp, -1, sizeof dp);

  int a1000, a100, a1;
  cin >> a1000 >> a100 >> a1;
  for(int i=0;i<2;i++)
    cin >> kDebt[i] >> e1000[i] >> e100[i] >> e1[i];

  cout << solve(a1000, a100, a1) << endl;
  
  return 0;
}