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  1. def f(n):r='',;exec"r=[s+c for s in r for t in[s.count('(')]for c in')('[t+t==len(s):2-t/n]];"*2*n;print'\n'.join(r)
  2.  
  3. f(0)
  4. f(1)
  5. f(2)
  6. f(3)
  7. f(4)
Success #stdin #stdout 0.01s 8968KB
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Standard input is empty
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()
()()
(())
()()()
()(())
(())()
(()())
((()))
()()()()
()()(())
()(())()
()(()())
()((()))
(())()()
(())(())
(()())()
(()()())
(()(()))
((()))()
((())())
((()()))
(((())))
https://ideone.com/qu70hh
language:
Python (cpython 2.7.16)
created:
7 years ago
visibility:
secret

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