_siftup and _siftdown implementation

[Bernardo Sulzbach]

On 02/05/2016 12:42 PM, Sven R. Kunze wrote:
>>
>> PS: I do competitive programming, I use these modules every couple of
>> days
>> when compared to other modules. so didn't give much thought when
>> posting to
>> the mailing list. sorry for that.
>
> Competitive programming? That sounds interesting. :)
>

I wonder why you *can* use this amount of already done stuff in 
competitive programming. When I was into that you could use what the 
standard library of the language gave you and nothing else.