did you guys consider months after december ? say april 2011 ?
because they can fly there in 2009 or after, right ?

I bed speak english :)
Last date is 25 of december (1 ≤ N ≤ 2(25))

try this test
1
100
outp
YES

on this test I understand my mistake

Why should that be YES.
Isn't that
1 2 2 5 5---> 5 December odd, so NO payment ?

because 100 is also 1*2*2*25 and if it is possible the answer
is yes

second test contains n=1

Edited by author 25.01.2009 16:29

But sample contains test 6, and 6=1*6, so we can recieve our money on 2 December (2 is even). But answer in sample is NO. Who can explain me this?

Read the problem statements careful.

No! Second test doesn't contain n = 1. In second test n > 1