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  1. import itertools
  2.  
  3. def twentyfour(cards):
  4.     for nums in itertools.permutations(cards):
  5.         for ops in itertools.product('+-*/', repeat=3):
  6.             bds1 = '({0}{4}{1}){5}({2}{6}{3})'.format(*nums, *ops)
  7.             bds2 = '(({0}{4}{1}){5}{2}){6}{3}'.format(*nums, *ops)
  8.             bds3 = '{0}{4}({1}{5}({2}{6}{3}))'.format(*nums, *ops)
  9.  
  10.             for bds in [bds1, bds2, bds3]:
  11.                 try:
  12.                     if abs(eval(bds) - 24.0) < 1e-10:
  13.                         bds += '=24'
  14.                         return bds
  15.                 except ZeroDivisionError:
  16.                     continue
  17.  
  18.     return 'Not found!'
  19.  
  20. print(twentyfour([int(input()) for i in range(4)]))
  21.  
Success #stdin #stdout 0.02s 27712KB
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2*(3+(4+5))=24
https://ideone.com/OeSdQx
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
public

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