Bitcoin and Litecoin have their copyrights.
A small modification of a basic concept using the most basic of loops and a well know computer science concept, http://en.wikipedia.org/wiki/Random_seed, does not deserve a mention.
There was nothing there significantly modified from the original code to deserve a copyright overriding the original bitcoin/litecoin source.
There are significant modifications, the function signature of GetBlockValue() is changed, and there are many changes in the main.cpp for the deterministic random generation. It uses the previous block hash (actual part of the hash) as seed to generate the random number. These are significant changes and without it the deterministic random will not work. You used this key feature but erased the Luckycoin's copyright. You should put your copyright under it, like Litecoin and Luckycoin did. This is the basic ethics in the open source coding, there's nothing strange there.
Arlington, no need to bother with him. This guy does not seem to know much coding, he did not even bother to change the hash substring location for the generation of the seed. He just get the luckycoin code base, change a few parameters, erased the luckycoin copyright, put his own, and without understanding the code, just compile and use it. He does not seem to understand the basic open source coding ethics.