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Discussion of Problem 1574. Mathematicians and brackets

example 2 why 2?
Posted by Catalin Pol 13 Oct 2007 14:38
)()(  ->  ()() with only one cyclic shift
Re: example 2 why 2?
Posted by Peter Savelyev 13 Oct 2007 20:01
Shift for 1 and shift for 3.
Re: example 2 why 2?
Posted by Nerlin 21 Sep 2009 22:59
i can't understand, can u explain it ?