import timeit
import math


def showTheRules(n): # 1
	# TO KNOW: Sequential actions are added
    x = 2  # O(1)
    y = 3  # O(1)
    # O(1) + O(1) = O(1+1) = O(2)
    # O(c) -> O(1)

def createSet(sizeOfSet): # 2
    newSet = set() 

    # Loop repetitions get multiplied by loop context
    for i in range(sizeOfSet): # n
        newSet.add(i)  # 1
    return newSet

def tenTimes(multiplier): # 3
    myList = list() 
    firstTen = 10   
    for i in range(firstTen): 
        myList.append(i*multiplier) 
    return myList

def create2DList(size): # 4
    returnList = list() 

    for i in range(size):  # n
        returnList.append(list()) 
        for j in range(size):  # n
            returnList[i].append('X') 
    return returnList 

def quadraticEquation(a, b, c): # 5  O(1)
    d = b**2-4*a*c # discriminant
    #
    # We take the worst case statement
    if d == 0:
        x = (-b+math.sqrt(b**2-4*a*c))/2*a
    elif d > 0:
        x1 = (-b+math.sqrt((b**2)-(4*(a*c))))/(2*a)
        x2 = (-b-math.sqrt((b**2)-(4*(a*c))))/(2*a)

def subsets(my_set): # 6
    result = [[]]
    for x in my_set:
        result = result + [y + [x] for y in result]
    return result