摘要:
Problem DescriptionNow an emergent task for you is to open a password lock. The password is consisted of four digits. Each digit is numbered from 1 to 9.Each time, you can add or minus 1 to any digit. When add 1 to '9', the digit will change to be '1' and when minus 1 to '1', 阅读全文
posted @ 2013-02-25 20:49
crazy_apple
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