DragonKoko's blog

By DragonKoko, 5 years ago, In English,

so i tried to solve this two problem and they both got WA test 2

here's the problems 2012-2013 Waterloo Local Contest, 13 October, 2012 :

so i want to know the main idea of the both gym problems if possible and what is the trick in the second test case ?

 
 
 
 
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