这回又是忽略了题目中的一句话：When the coin reaches the cell that has letter ‘*’
it will be there permanently.
就是说当走到这个格子的时候，就可以定住在这个格子的了。不过这个时候也可以从别的方向走过来，所以题目的真正意思是，在k步内走到这个格子使用的最小的修改指令是多少，并不一定需要就在第k步到达这个格子。
...
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其他好文 时间：
2014-05-11 13:06:57
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472
Maze
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65768/65768 K (Java/Others)
Total Submission(s): 1419 Accepted Submission(s): 511
Special Judge
Problem Description
When wake...
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其他好文 时间：
2014-05-11 01:46:38
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421
InjectionInjection flaws, such as SQL, OS, and
LDAP injection, occur when untrusted data is sent to an interpreter as part of a
command or query. The ...
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移动开发 时间：
2014-05-10 07:23:51
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460
This week I setup the Jenkins on my Mac and try
to build iOS applications. unfortunately I got the code signing issues, either I
use xcode plugin or x...
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移动开发 时间：
2014-05-10 06:22:45
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347
SEO是Search Engine Optimization的缩写，用英文描述是to use some
technics to make your website in the top places in Search Engine when somebody
is using Search Eng...
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其他好文 时间：
2014-05-09 16:14:40
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290
When you’re running Ubuntu and updating your
system frequently, there is a high chance that older kernels that are no longer
needed are still installe...
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其他好文 时间：
2014-05-09 13:19:09
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311
Why need initialization and cleanup?A large
segment of C bugs occur when the programmer forgets to initialize or clean up a
variable.The class designe...
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编程语言 时间：
2014-05-08 19:13:20
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326
【failed to get the task for process问题】A: Why am
I getting "Error launching remote program: failed to get the task for process"
when debugging an iPhon...
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其他好文 时间：
2014-05-08 18:10:58
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326
Restoring Purchased ProductsUsers restore
transactions to maintain access to content they’ve already purchased. For
example, when they upgrade to a ne...
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2014-05-07 17:06:59
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869
I had a similar problem when running a spring
web application in an Eclipse managed tomcat. I solved this problem by adding
maven dependencies in the ...
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移动开发 时间：
2014-05-07 14:33:12
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486
