print("Hi")
def fun1():
    def fun2():
        print("Hello")
    fun2()
    
print("World")

def fun3():
    def fun4():
        print("Hello")
    c = 4 + 5

def fun5():
    c = 6
    def fun6():
        print("Hello")
    c = 4 + 5


if True:
    if True:
        if True:
            print("Hello")
print("World")

if True:
    if True:
        if True:
            print("Hello")
        print("World")

if True:
    if True:
        if True:
            print("Hello")
    print("World")

if True:
    if True:
        if True:
            print("Hello")
    else:
        print("World")

if True:
    if True:
        if True:
            print("Hello")
else:
    print("World")

class Foo(object):
    x:int = 0

    def __init__(self:"Foo", x:int):
        self.x = x
    
    def bar(y:int)->None:
        print("Hello World!",self.x+y)
        y = 10

f = Foo(1)
print(f.x)
f.bar(4)

a=[[[1],[2]][[3],[4]]]
print(a[0][0][1]*a[1][1][0])