fork(2) download
copy 
  1. def foo(n, i, j):
  2. 	j -= 1
  3. 	a = [0] * n
  4. 	a[j] = 1
  5.  
  6. 	while i < n:
  7. 		next = [0] * n
  8. 		for k in range(n):
  9. 			if k == 0:
  10. 				next[k] = a[k + 1]
  11. 			elif k == n - 1:
  12. 				next[k] = a[k - 1]
  13. 			else:
  14. 				next[k] = a[k - 1] + a[k + 1]
  15.  
  16. 		a = next
  17. 		i += 1
  18.  
  19. 	return sum(a)
  20.  
  21. print(foo(8, 6, 3))
Success #stdin #stdout 0.02s 9064KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
4
https://ideone.com/pswL1I
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!