print('I\'m \"OK\"!')
print('\n')
print('I\' learning\nPython.')
print('\n')
print('\\\n\\')
print('\n')
print('\\\t\\')
print('\n')
print(r'\\\t\\')
print('\n')
print('''line1
        line2
        line3''')
print('\n')
print(r'''line1
        line2
        line3''')
print('\n')
print('\n01: ')
print(True)
print('\n02: ')
print(False)
print('\n3>2: ')
print(3>2)
print('\n3>5: ')
print(3>5)
print('\n')
print('\nTrue and True: ')
print(True and True)
print('\nTrue and False: ')
print(False and True)
print('\n3>1 and 1>5: ')
print(3>1 and 1>5)
print('\n')
print('\nTrue or True: ')
print(True or True)
print('\nTrue or False: ')
print(True or False)
print('\n5>3 or 1>3: ')
print(5>3 or 1>3)
print('\n')
print('\nnot True: ')
print(not True)
print('\nnot Flase: ')
print(not False)
print('\nnot 1>3: ')
print(not 1>3)
print('\n')

age = 21
if age >= 18:
    print("adult")
else:
    print("teenager")

print("\n")

n = 123
f = 456.789
s1 = 'Hello, world'
s2 = 'Hwllo, \'Adam\''
s3 = r'Hello, "Vart"'
s4 = r'''Hello,
Lisa!'''

print("\n")
print(n)
print("\n")
print(f)
print("\n")
print(s1)
print("\n")
print(s2)
print("\n")
print(s3)
print("\n")
print(s4)

