qq_40941611的博客

We know what a base of a number is and what the properties are. For example, we use decimal number system, where the base is 10 and we use the symbols - {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}. But in differen...

度熊手上有一本字典存储了大量的单词，有一次，他把所有单词组成了一个很长很长的字符串。现在麻烦来了，他忘记了原来的字符串都是什么，神奇的是他竟然记得原来那些字符串的哈希值。一个字符串的哈希值，由以下公式计算得到：  H(s)=∏i≤len(s)i=1(Si−28) (mod 9973)H(s)=∏i=1i≤len(s)(Si−28) (mod 9973)  SiSi代表 S[i] 字符的 ASCII...

Everybody knows any number can be combined by the prime number.  Now, your task is telling me what position of the largest prime factor.  The position of prime 2 is 1, prime 3 is 2, and prime 5 is 3, ...