#nullable enable

#region
var (_input, _iter) = (Array.Empty<string>(), 0);
T I<T>() where T : IParsable<T>
{
    while (_iter >= _input.Length) (_input, _iter) = (Console.ReadLine()!.Trim().Split(' '), 0);
    return T.Parse(_input[_iter++], null);
}
#endregion

var r = I<long>();
var p = I<long>();
var q = I<long>();
var ez = Enumerable.Range(0, 4).Select(_ => I<long>()).ToArray();

var ans = 0L;
var fail = ez.Sum() / 3 + 1;
while (fail - ans >= 2)
{
    var tz = ez.AsSpan().ToArray();
    var m = (ans + fail) / 2;
    var l = 0L;
    for (var i = 0; i < 3; i++) l += Math.Max(m - tz[i], 0);
    var s = 0L;
    for (var i = 0; i < 4; i++)
    {
        var plus = tz[i];
        if (i != 3) plus -= m;
        s += Math.Max(plus, 0);
    }
    if (s >= l && p * m + q * l <= r) ans = m;
    else fail = m;
}
Console.WriteLine(ans);