How is this test case correct for Div1 250 SRM 680?

Revision en2, by rhezo, 2016-04-28 03:13:02

How is the test case given in the image for this problem correct? The only possible sets are {9,10,11} or {9,10,12}. None of them have exactly n/2 terms even or odd. Please help!

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en4 English rhezo 2016-04-28 05:51:11 9
en3 English rhezo 2016-04-28 03:14:01 83
en2 English rhezo 2016-04-28 03:13:02 90
en1 English rhezo 2016-04-28 03:12:10 303 Initial revision (published)