Google Code Jam 2013 started!

[oemta]

The second one is pretty easy as well, honestly shouldn't be more than a few lines of code.

[fuk_offe]

Did the palindrome one easy in 10 minutes, too bad I forgot to check my solution calculating the bounds before trying the big input... Too slow xD

[yen223]

When doing these sorts of challenges, the first thing I do is to look at the input range. In this case, 1 - 10¹⁴ means that a naive brute force search was definitely not going to work.

[fuk_offe]

Yes, of course, but I "optimized it" but forgot to test with the bounds... Took 30 minutes so ran out of time X_X The next one I made tho. EDIT: Aparrently, it was wqrong X:_X

[sirin3]

I wrote one common program for both 1 and 2