def swime(lst):
    p = lst[0]
    S = []
    B = []
    for x in lst:
        if x < p:
            S.append(x)
        else:
            B.append(x)
    return S + swerve(B)	

def swerve(lst):
    result = []
    for x in lst:
        if x > 0:
            result.append(x)
    result.sort()
    return result

 distance += get_distance(i[1],i[0],n[1],n[0])

def total_distance(cities):
    total = []
    for i in cities:
        distance = 0
        for n in cities:
            distance += get_distance(i[1],i[0],n[1],n[0])
            total.append(distance)

repeat n times	
         generate random coordinates for new_city	
         too_close = True	
         while too_close == True		
                  too_close = False		
                  for each city in the city list so far