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  1. # your code goes here
  2. n=int(input())
  3. a=[]
  4. for i in range(n):
  5. 	a.append(int(input())*2)
  6.  
  7. p=0
  8. i=-2*a[0]
  9. while i<2*a[0]:
  10. 	j=i
  11. 	while j<2*a[0]:
  12. 		if (i+j)==a[0]:
  13. 			y=j
  14. 			l=1
  15. 			while l<n:
  16. 				z=a[l]-y
  17. 				if z<y:
  18. 					break
  19. 				y=z
  20. 				l+=1
  21. 			if l==n:
  22. 				p+=1
  23. 		j+=1
  24.  
  25. 	i+=1
  26.  
  27. print p
  28.  
Success #stdin #stdout 0s 9032KB
comments (?)
stdin 
3
2
5
9
stdout 
4
https://ideone.com/IlWFJO
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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