public static void Run()
{
ConsoleScanner sc = new ConsoleScanner();
long n = sc.NextLong(), a = sc.NextLong(), b = sc.NextLong(), c = sc.NextLong(), liters = 0;
if (b - c < a && n >= b)
{
long i = (n - b) / (b - c) + 1;
liters += i;
n -= i * (b - c);
}
liters += n / a;
Console.WriteLine(liters);
}
