public static int CompareBelts(Belt b1, Belt b2)
{
if (b1.speed > b2.speed)
{
return(1);
}
else if (b1.speed == b2.speed)
{
return(0);
}
else
{
return(-1);
}
}
static void Main(string[] args)
{
TextReader tr = new StreamReader("A-large-0.in");
TextWriter tw = new StreamWriter("A-large-0.out");
string line = tr.ReadLine();
long numTest = long.Parse(line);
for (long testi = 0; testi < numTest; testi++)
{
string[] elements = tr.ReadLine().Split(' ');
int X = int.Parse(elements[0]);
int S = int.Parse(elements[1]);
int R = int.Parse(elements[2]);
int t = int.Parse(elements[3]);
int N = int.Parse(elements[4]);
Belt[] belts = new Belt[N + 1];
int allLength = 0;
for (int i = 0; i < N; i++)
{
elements = tr.ReadLine().Split(' ');
belts[i].length = int.Parse(elements[1]) - int.Parse(elements[0]);
belts[i].speed = int.Parse(elements[2]);
allLength += belts[i].length;
}
belts[N].length = X - allLength;
belts[N].speed = 0;
Array.Sort(belts, CompareBelts);
double runLeft = t;
double totalTime = 0;
for (int i = 0; i < N + 1; i++)
{
if (runLeft >= (double)belts[i].length / (double)(belts[i].speed + R))
{
double currTime = (double)belts[i].length / (double)(belts[i].speed + R);
totalTime += currTime;
runLeft -= currTime;
}
else if (runLeft > 0)
{
double runLength = (belts[i].speed + R) * runLeft;
double leftLength = belts[i].length - runLength;
double leftTime = (double)leftLength / (double)(belts[i].speed + S);
totalTime += (runLeft + leftTime);
runLeft = 0;
}
else
{
double currTime = (double)belts[i].length / (double)(belts[i].speed + S);
totalTime += currTime;
}
}
CultureInfo cult = new CultureInfo("en-US");
tw.WriteLine("Case #{0}: {1}", testi + 1, totalTime.ToString(cult));
Console.WriteLine("Case #{0}: {1}", testi + 1, totalTime.ToString(cult));
}
tr.Close();
tw.Close();
Console.ReadKey();
}