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Discussion of Problem 1632. Lasers

Interesting :-)
Posted by ftc 13 Nov 2009 19:48
Nice to see, but "higher" relation is not transitive ;-)
Re: Interesting :-)
Posted by xurshid_n 9 Aug 2012 12:48
It is very easy problem, but why only 54 people solved?!
Re: Interesting :-)
Posted by DPR-pavlin 8 Jan 2013 02:47
This problem has simple solution and very interesting, but not obvious idea...