text: #!/usr/bin/env python3
  import random
  shared = 0
  trial_number = 10000
  for i in range(trial_number):
  	birthdays = [0] * 365
  	for j in range(25):
  		date = random.randint(0, 364)
  		birthdays[date] += 1
  		if birthdays[date] == 2:
  			shared += 1
  			break
  print(f'{shared / trial_number : .3f}')
  