x = 0

if x == False:

x = 1

if x:

x += 3

print(x)

a = [1, 2, 3]

b = a

a += [4]

print(a is b, a == b)

a = 1

b = 2

if a == b:

a += b

elif a < b:

if b - a == 1:

a = b * 2

else:

a = b + 2

print(a)

a = 5

if a % 2 == 0:

a = a / 2

else:

a = a * 2

if a > 5:

a -= 1

print(int(a))

x = None

if x:

res = 1

elif x is None:

res = 2

else:

res = 3

print(res)

s = 0

for i in range(4):

for j in range(i):

s += 1

print(s)

x = 3

if x > 0:

x += 1

if x > 4:

x *= 2

print(x)

try:

a = 1 / 1

except ZeroDivisionError:

a = 0

else:

a += 1

print(a)