text: # -*-coding:utf-8 -*-
  
  """
  # File       : 109_约会时间差.py
  # Time       ：2020/6/14 下午6:59
  # Author     ：Dr. Xianyu
  # version    ：python 3.8
  # Description：
  """
  
  import random
  
  trial = 100000
  total = 0
  for i in range(trial):
      A, B = random.random() * 60, random.random() * 60
      total += abs(A-B)
  average = total/trial
  print(average)