a = 3
b = 5

if a == 3 and b == 4:
    print('OK')

if a ==3 or b == 4:
    print('OK')


if a > 1 and a < 10:
    print('OK')

if 1 < a < 10:
    print('OK')


# if a > 1 and 10 > a:
#     print('OK')

