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first, so I can make it to be a number of 5n, n = 1,2,3,..
jjmmjj
2010-02-28 21:54:29
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jjmmjj
2010-02-28 21:55:29
if it is M=5N, then second picker, if not, then first.
jjmmjj
2010-02-28 21:55:29if it is M=5N, then second picker, if not, then first.