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题干: Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. Example 1 阅读全文
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sql注入 1 判断是否存在注入(字符型or数字型)1' or 1=1# 2 猜测语句中字段数1' order by 11' order by 21' order by 3...2得到字段数或者1' union select 1#1' union select 1,2#1' union select 阅读全文
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http://poj.org/problem?id=3069 Description Saruman the White must lead his army along a straight path from Isengard to Helm’s Deep. To keep track of h 阅读全文