lst3 = [element for element in lst1 if not element in lst2]

lst1 = [1, 2, 3, [1, 2, 3, 4], 5, 6]
lst2 = [0, 1, 2, [2, 3], 6]
lst3 = [3, [1, 4], 5]

def Zlst():
    lst = []
    y=1
    while y==1:
        x = raw_input()
        if x == "end":
            y=0
        if x == "(":
            a = 1
            x = []
            while a == 1:
                q = raw_input()
                if q == ")":
                    lst.append(x)
                    a = 0
                else:
                    x.append(q)
        else:
            lst.append(x)
    return lst

def f():
    l=[]
    while True:
        x=raw_input()
        if x=='end' or x=='': break
        if ',' in x:
            x=[int(x1) for x1 in x.replace(',','')]
            l.append(x)
        else:
            l.append(int(x))

    return l