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  1. n = int(input())
  2.  
  3. fac_2n = 1
  4. fac_n = 1
  5.  
  6. for i in range(1,2*n+1):
  7. 	fac_2n = fac_2n*i
  8.  
  9. for i in range(1,n+1):
  10. 	fac_n = fac_n*i
  11.  
  12. ans = fac_2n/(fac_n*fac_n*(n+1))
  13.  
  14. print(ans)
Runtime error #stdin #stdout #stderr 0.16s 23488KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
Traceback (most recent call last):
  File "./prog.py", line 1, in <module>
EOFError: EOF when reading a line
https://ideone.com/aC64bY
language:
Python 3 (python  3.12)
created:
5 years ago
visibility:
public

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