public InputFile(string filePath)
{
using (var file = File.OpenText(filePath))
{
var testCaseCount = int.Parse(file.ReadLine());
testCases = new List<TestCase>(testCaseCount);
for (var i = 0; i < testCaseCount; i++)
{
var N = ReadInts(file)[0];
var cars = new Car[N];
for (var j = 0; j < N; j++)
{
var tokens = ReadStrings(file);
cars[j] = new Car(
tokens[0] == "L" ? Lane.Left : Lane.Right,
int.Parse(tokens[1]),
int.Parse(tokens[2]));
}
testCases.Add(new TestCase(cars));
}
}
}
public TestCase(Car[] cars)
{
this.cars = cars;
}
static Fraction GetOverlappingStartTime(Car car1, Car car2)
{
return GetTouchingTime(car1, car2, +5);
}
static Fraction GetTouchingTime(Car car1, Car car2, int offset)
{
if (car1.Speed < car2.Speed)
ToolBox.Swap(ref car1, ref car2);
return new Fraction(car1.InitialPosition - car2.InitialPosition + offset, car2.Speed - car1.Speed);
}
public LaneList(Car[] cars)
{
lanes = cars.Select(x => x.InitialLane).ToArray();
}
Fuzzy GetTouchingTime(Car car1, Car car2, double offset)
{
if (car1.Speed < car2.Speed)
ToolBox.Swap(ref car1, ref car2);
var time = (car1.InitialPosition - car2.InitialPosition + offset) / (car2.Speed - car1.Speed);
if (time == 0) return Fuzzy.Epsilon;
return time;
}
Fuzzy GetLeaveTime(Car car1, Car car2)
{
return GetTouchingTime(car1, car2, -5);
}
Fuzzy GetEnterTime(Car car1, Car car2)
{
return GetTouchingTime(car1, car2, +5);
}
