Facebook Hacker Cup 2013 Qualifying Round

I have participated in Facebook Hacker Cup this year and gone through Qualifying Round. Round 1 will start on Dec 6th and last 24 hours. Here are my solutions for problems in Qualifying Round: https://github.com/luugiathuy/FacebookHackerCup

More about Facebook Hacker Cup: https://www.facebook.com/hackercup

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