Facebook Hacker cup 2013

Every year Facebook donate $ 10'000 to the winner of its Hacker cup tournament.
Did you know that you may participate using Rebol?



Well, if you were interested winning $10'000, you should try to solve the following real tournament questions:

• http://rebol.informe.com/forum/rebol-2-f8/hacker-cup-2013-final-problem-1-t60.html
• http://rebol.informe.com/forum/rebol-2-f8/hacker-cup-2013-final-problem-2-t61.html
• http://rebol.informe.com/forum/rebol-2-f8/hacker-cup-2013-final-problem-3-t62.html
• http://rebol.informe.com/forum/rebol-2-f8/hacker-cup-2013-final-problem-4-t63.html

Post your solution on the forum, let's see who is the best rebol coder!