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Network of SchoolsTime Limit:1000MSMemory Limit:10000KTotal Submissions:12240Accepted:4871DescriptionA number of schools are connected to a computer n... 阅读全文
posted @ 2015-04-17 15:31
giddens lee
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7.7:Encrypt each of the following RSA messages x so that x is divided into blocks of integers of length 2; that is, if x = 142528,encode 14,25,and 28 ... 阅读全文
posted @ 2015-03-23 21:07
giddens lee
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贪心算法正确性证明:1.证明贪心选择性质:经过贪心选择,可以获得最优解2.最优子结构:证明子问题最优解与贪心选择组合,结果依然是最优解•All we really need to do is argue that an optimal solution to the subproblem, comb... 阅读全文
posted @ 2015-03-14 15:29
giddens lee
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