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  1. # coding: utf-8
  2.  
  3. class Section:
  4.     @classmethod
  5.     def init_from_str(cls, s):
  6.         l, r = s.split(",")
  7.         left = float(l[1:])
  8.         right = float(r[:-1])
  9.         left_border = l[0]
  10.         right_border = r[-1]
  11.  
  12.         return cls(left_border, left, right, right_border)
  13.  
  14.     def __init__(self, left_border, left, right, right_border):
  15.         self.left_border = left_border
  16.         self.left = left
  17.         self.right = right
  18.         self.right_border = right_border
  19.  
  20.     @property
  21.     def is_empty(self):
  22.         if self.left > self.right:
  23.             return True
  24.         elif self.left == self.right and (self.left_border == "(" or self.right_border == ")"):
  25.             return True
  26.         else:
  27.             return False
  28.  
  29.     def __or__(self, other):
  30.         if self.left == other.left:
  31.             left = self.left
  32.             left_border = "(" if "(" in [self.left_border, other.left_border] else "["
  33.         elif self.left > other.left:
  34.             left = self.left
  35.             left_border = self.left_border
  36.         else:
  37.             left = other.left
  38.             left_border = other.left_border
  39.  
  40.         if self.right == other.right:
  41.             right = self.right
  42.             right_border = ")" if ")" in [self.right_border, other.right_border] else "]"
  43.         elif self.right < other.right:
  44.             right = self.right
  45.             right_border = self.right_border
  46.         else:
  47.             right = other.right
  48.             right_border = other.right_border
  49.  
  50.         return Section(left_border, left, right, right_border)
  51.  
  52.     def __str__(self):
  53.         if self.is_empty:
  54.             return "{}"
  55.         else:
  56.             return "{}{:f},{:f}{}".format(self.left_border, self.left, self.right, self.right_border)
  57.  
  58.  
  59. while True:
  60.     r1, r2 = input().split(" ")
  61.     r1 = Section.init_from_str(r1)
  62.     r2 = Section.init_from_str(r2)
  63.     print(r1|r2)
  64.  
Runtime error #stdin #stdout #stderr 0.02s 27712KB
comments (?)
stdin 
[1,3] [2,4]
(1,2) [1,2]
[0,100) (5,1000000000)
(-100000000,2] [1,100000000)
[1,2) [2,3)
stdout 
[2.000000,3.000000]
(1.000000,2.000000)
(5.000000,100.000000)
[1.000000,2.000000]
{}
stderr 
Traceback (most recent call last):
  File "./prog.py", line 60, in <module>
EOFError: EOF when reading a line
https://ideone.com/BBteSk
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
public

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