def initialize():
    '''Initializes the global variables needed for the simulation.
    Note: this function is incomplete, and you may want to modify it'''
    
    global cur_hedons, cur_health

    global cur_time
    global last_activity, last_activity_duration
    
    global last_finished
    global bored_with_stars
    
    cur_hedons = 0
    cur_health = 0
    
    cur_star = None
    cur_star_activity = None
    
    bored_with_stars = False
    
    last_activity = None
    last_activity_duration = 0
    
    cur_time = 0
    
    last_finished = -1000
    

            

def star_can_be_taken(activity):
    pass

    
def perform_activity(activity, duration):
    pass

def get_cur_hedons():
    pass
    
def get_cur_health():
    pass
    
def offer_star(activity):
    pass
        
def most_fun_activity_minute():
    pass
    
################################################################################
#These functions are not required, but we recommend that you use them anyway
#as helper functions

def get_effective_minutes_left_hedons(activity):
    '''Return the number of minutes during which the user will get the full
    amount of hedons for activity activity'''
    pass
    
def get_effective_minutes_left_health(activity):
    pass    

def estimate_hedons_delta(activity, duration):
    '''Return the amount of hedons the user would get for performing activity
    activity for duration minutes'''
    pass
            

def estimate_health_delta(activity, duration):
    pass
        
################################################################################
        
if __name__ == '__main__':
    initialize()
    perform_activity("running", 30)    
    print(get_cur_hedons())            #-20 = 10 * 2 + 20 * (-2)
    print(get_cur_health())            #90 = 30 * 3
    print(most_fun_activity_minute())  #resting
    perform_activity("resting", 30)    
    offer_star("running")              
    print(most_fun_activity_minute())  #running
    perform_activity("textbooks", 30)  
    print(get_cur_health())            #150 = 90 + 30*2
    print(get_cur_hedons())            #-80 = -20 + 30 * (-2)
    offer_star("running")
    perform_activity("running", 20)
    print(get_cur_health())            #210 = 150 + 20 * 3
    print(get_cur_hedons())            #-90 = -80 + 10 * (3-2) + 10 * (-2)
    perform_activity("running", 170)
    print(get_cur_health())            #700 = 210 + 160 * 3 + 10 * 1
    print(get_cur_hedons())            #-430 = -90 + 170 * (-2)