Ship Damage

using System;
class ShipDamage
{
  static void Main()
  {
    //Telerik Academy
    //Inside the sea (a standard Cartesian /rectangular/ coordinate system) we are given a ship S (a rectangle whose sides are parallel to the coordinate axes), a horizontal line H (the horizon) and three catapults, given as coordinates C1, C2 and C3 that will be used to fire the ship. When the attack starts, each catapult hits a projectile exactly into the positions that are symmetrical to C1, C2 and C3 with respect to the horizon H. When a projectile hits some of the corners of the ship, it causes a damage of 25%, when it hits some of the sides of the ship, the damage caused is 50% and when it hits the internal body of the ship, the damage is 100%. When the projectile hit outside of the ship, there is no damage. The total damage is sum of the separate damages and can exceed 100%.
    //Your task is to write a program that calculates the total damage caused after the attack over the ship.

    int shipX1 = int.Parse(Console.ReadLine());
    int shipY1 = int.Parse(Console.ReadLine());
    int shipX2 = int.Parse(Console.ReadLine());
    int shipY2 = int.Parse(Console.ReadLine());
    int horizonY = int.Parse(Console.ReadLine());
    int catapultX1 = int.Parse(Console.ReadLine());
    int catapultY1 = int.Parse(Console.ReadLine());
    int catapultX2 = int.Parse(Console.ReadLine());
    int catapultY2 = int.Parse(Console.ReadLine());
    int catapultX3 = int.Parse(Console.ReadLine());
    int catapultY3 = int.Parse(Console.ReadLine());

    int totalDamage = 0;

    //mirror the catapults Y positon to know the proyectile Y coordinate.
    int mirroredCatapultY1 = -(catapultY1 - horizonY);
    int mirroredCatapultY2 = -(catapultY2 - horizonY);
    int mirroredCatapultY3 = -(catapultY3 - horizonY);
    int horizonedShipY1 = shipY1 - horizonY;
    int horizonedShipY2 = shipY2 - horizonY;

    //Define the ship's rectangle area
    int shipTop = Math.Max(horizonedShipY1, horizonedShipY2);
    int shipBottom = Math.Min(horizonedShipY1, horizonedShipY2);
    int shipLeft = Math.Min(shipX1, shipX2);
    int shipRight = Math.Max(shipX1, shipX2);

    //Catapult 1
    if (mirroredCatapultY1 > shipBottom && mirroredCatapultY1 < shipTop)
    {
      if (catapultX1 > shipLeft && catapultX1 < shipRight) //Inside the ship
      {
        totalDamage += 100;
      }
      else if (catapultX1 == shipLeft || catapultX1 == shipRight)
      {
        totalDamage += 50; //On the Y sides
      }
    }
    if (mirroredCatapultY1 == shipBottom || mirroredCatapultY1 == shipTop)
    {
      if (catapultX1 == shipLeft || catapultX1 == shipRight)
      {
        totalDamage += 25; //In the corners
      }
      else if (catapultX1 > shipLeft && catapultX1 < shipRight)
      {
        totalDamage += 50; //On the X side
      }
    }

    //Catapult 2

    if (mirroredCatapultY2 > shipBottom && mirroredCatapultY2 < shipTop)
    {
      if (catapultX2 > shipLeft && catapultX2 < shipRight) //Inside the ship
      {
        totalDamage += 100;
      }
      else if (catapultX2 == shipLeft || catapultX2 == shipRight)
      {
        totalDamage += 50; //On the Y sides
      }
    }
    if (mirroredCatapultY2 == shipBottom || mirroredCatapultY2 == shipTop)
    {
      if (catapultX2 == shipLeft || catapultX2 == shipRight)
      {
        totalDamage += 25; //In the corners
      }
      else if (catapultX2 > shipLeft && catapultX2 < shipRight)
      {
        totalDamage += 50; //On the X side
      }
    }

    //Catapult 3

    if (mirroredCatapultY3 > shipBottom && mirroredCatapultY3 < shipTop)
    {
      if (catapultX3 > shipLeft && catapultX3 < shipRight) //Inside the ship
      {
        totalDamage += 100;
      }
      else if (catapultX3 == shipLeft || catapultX3 == shipRight)
      {
        totalDamage += 50; //On the Y sides
      }
    }
    if (mirroredCatapultY3 == shipBottom || mirroredCatapultY3 == shipTop)
    {
      if (catapultX3 == shipLeft || catapultX3 == shipRight)
      {
        totalDamage += 25; //In the corners
      }
      else if (catapultX3 > shipLeft && catapultX3 < shipRight)
      {
        totalDamage += 50; //On the X side
      }
    }
    Console.WriteLine(totalDamage + "%");
  }
}