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Discussion of Problem 1003. Parity

One test to rule them all
Posted by Afigan 6 Aug 2015 00:25
100000000
10
1 5 even
6 10 even
11 18 even
19 25 even
1 8 even
16 25 even
16 40 even
9 40 odd
1000 5000 odd
1000 6000 odd
-1

answer: 7
Re: One test to rule them all
Posted by PO 13 May 2019 13:56
why is it 7? could you explain?