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  1. x = int(input())
  2. D = {}
  3. m = 0
  4. M = []
  5. for n in range(x):
  6. 	a, b = input().split()
  7. 	if b in D.keys():
  8. 		D[b].append(a)
  9. 	else:
  10. 		D[b] = [a]
  11. print(D)
  12. """
  13. for e in D.values():
  14. 	if len(e) > 1:
  15. 		m += len(e)
  16. 		for el in e:
  17. 			if el not in M:
  18. 				M.append(el)
  19. print(m)
  20. M.sort()
  21. for n in M:
  22. 	print(n)
  23. """
Success #stdin #stdout 0.01s 27696KB
comments (?)
stdin
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4
papa paulo
nicao renan
renan paulo
paulo papa
stdout
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{'paulo': ['papa', 'renan'], 'papa': ['paulo'], 'renan': ['nicao']}
https://ideone.com/u8JxYq
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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