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1.考虑文法 2.最右推导 不难看出,这个文法是而二义的,所以有多个最右推导 3.移进归约 用一个栈存文法符号,用输入缓存区保存要分析的输入串,用$标记栈底 include include include include include using na 阅读全文
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递归下降程序 递归下降程序一般是针对某一个文法的。而递归下降的预测分析是为每一个非终结符号写一个分析过程,由于文法本身是递归的,所以这些过程也是递归的。 以上是前提。 Sample 1. 假如给的是正规式子,首先要做的是将其改为文法表示: 2. 以 阅读全文
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URL:https://github.com/Chasssser/MytestOR(Linux) git clone https://github.com/Chasssser/Mytest 阅读全文
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An Easy Physics Problem Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 3845 Accepted Submission( 阅读全文
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Chip Factory Time Limit: 18000/9000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 5394 Accepted Submission(s): 2422 阅读全文
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1118 - Incredible Molecules PDF (English) Statistics Forum Time Limit: 0.5 second(s) Memory Limit: 32 MB PDF (English) Statistics Forum Time Limit: 0. 阅读全文
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1203 - Guarding Bananas PDF (English) Statistics Forum Time Limit: 3 second(s) Memory Limit: 32 MB Once there was a lazy monkey in a forest. But he lo 阅读全文
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列表内容assert()是一种预处理宏(preprocessor marco),使用一个表达式来作为条件,只在DEBUG模式下才有用。 对expr求值,如果expr为假,则输出信息并终止程序,反之则什么也不做。 用来检查"不会发生"的条件 。 assert的行为依赖与NDEBUG的预处理变量的状态, 阅读全文
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Ultimate Weapon Time Limit: 2000MS Memory Limit: 131072K Total Submissions: 2430 Accepted: 1173 Description In year 2008 of the Cosmic Calendar, the A 阅读全文
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Pyramids Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 3451 Accepted: 1123 Special Judge Description Recently in Farland, a country in As 阅读全文