numbers = [
  float(input('Enter a number: ')),
  float(input('Enter a number: ')),
  float(input('Enter a number: ')),
  float(input('Enter a number: ')),
]

print('Average: ' + str(sum(numbers) / 4))

largest = numbers[0]
largest_index = 0

if largest < numbers[1]:
  largest = numbers[1]
  largest_index = 1

if largest < numbers[2]:
  largest = numbers[2]
  largest_index = 2

if largest < numbers[3]:
  largest = numbers[3]
  largest_index = 3

smallest = numbers[0]

if smallest > numbers[1]:
  smallest = numbers[1]

if smallest > numbers[2]:
  smallest = numbers[2]

if smallest > numbers[3]:
  smallest = numbers[3]

second_largest = smallest

if second_largest < numbers[1] and largest_index != 1:
  second_largest = numbers[1]

if second_largest < numbers[2] and largest_index != 2:
  second_largest = numbers[2]

if second_largest < numbers[3] and largest_index != 3:
  second_largest = numbers[3]

largest_array = [largest, second_largest]

print(largest_array)