Question 1123242
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I do not know where did you take this problem and what is its source.


But one thing I know very firmly:


<H3>It is not a way to present a Math problem at this forum as you did.</H3>


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OK, let me express it in more understandable terms.


<pre>
    If after reading the post by a qualified expert, he still has questions of the type <U>what the condition means</U>,

    then the only place for such a post is in the GARBAGE BOX, and nowhere else.
</pre>