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  1. for _ in xrange(input()):
  2. 	n=input()
  3. 	count=0
  4. 	lst=map(int, raw_input().split(" "))
  5. 	i=0
  6. 	while 1:
  7. 		if lst[i]*2 in lst:
  8. 			count+=1
  9. 			del(lst[lst.index(lst[i]*2)])
  10. 		i+=1
  11. 	print count
Runtime error #stdin #stdout #stderr 0.01s 9016KB
comments (?)
stdin
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2
2
1 2
3 
1 2 4
stdout
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Standard output is empty
stderr
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Traceback (most recent call last):
  File "prog.py", line 7, in <module>
IndexError: list index out of range
https://ideone.com/KHxIyz
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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