# Back-Story
Every day I travel on the freeway.
When I am more bored than usual I sometimes like to play the following counting game I made up:
* As I join the freeway my count is ```0```
* Add ```1``` for every car that I overtake
* Subtract ```1``` for every car that overtakes me
* Stop counting when I reach my exit
What an easy game! What fun!
# Kata Task
You will be given
* The distance to my exit (km)
* How fast I am going (kph)
* Information about a lot of other cars 
 * Their time (relative to me) as I join the freeway. For example,
   * ```-1.5``` means they already passed my starting point ```1.5``` minutes ago
   * ```2.2``` means they will pass my starting point ```2.2``` minutes from now
 * How fast they are going (kph)
Find what is my "score" as I exit the freeway!
# Notes
* Assume all cars travel at a constant speeds
 Safety Warning 
If you plan to play this "game" remember that it is not really a game. You are in a **real** car.
There may be a temptation to try to beat your previous best score.
Please don't do that...
def freeway_game(dist_km_to_exit, my_speed_kph, other_cars):
    score = 0
    for pair in other_cars:
        if(my_speed_kph == pair[1]):
            continue
        if( 0 < pair[1]*(pair[0]/60) / (pair[1] - my_speed_kph) < dist_km_to_exit/my_speed_kph):
            score = score - 1 if pair[0] > 0 else score + 1
    return score
def freeway_game(dist_km_to_exit, my_speed_kph, other_cars):
    score = 0
    for pair in other_cars:
        if(my_speed_kph == pair[1]):
            continue
        if( 0 < pair[1]*(pair[0]/60) / (pair[1] - my_speed_kph) < dist_km_to_exit/my_speed_kph):
            score = score - 1 if pair[0] > 0 else score + 1
    return score