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  1. # your code goes here
  2. import itertools
  3.  
  4. count = 0
  5.  
  6. for a in itertools.permutations(range(7)):
  7. 	count += 1
  8. 	for i in range(7):
  9. 		if i == a[i]:
  10. 			count -= 1
  11. 			break
  12.  
  13. print(count)
Success #stdin #stdout 0.02s 9160KB
comments (?)
stdin 
Standard input is empty
stdout 
1854
https://ideone.com/3uGXix
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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