# 1
# def func(a, b, c, d):
#     print(a, b, c, d)
#
#     return a, b
#
# func(1, 2, 3, 4)
# 2
# def func(a, b, c, d = 100):
#     print(a, b, c, d)
#
# func(1, 2, 3, 4)
# func(1, 2, 3)
# 3
# def func (a, b, c = 50, d = 100):
#     print(a, b, c, d)
#
# func(1, 2)
# func(1, b =5)
# func(1, 2, 3, 4)
# # func(a = 1, 2)
# # func()
# func(1, b = 2)
