Modular multiplication of polynomials Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 4377 Accepted: 1980 Description Consider polynomials whose coefficients are 0 and 1. Addition of two polynomials is achieved by 'adding' the coeffici…
Modular multiplication of polynomials Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 3239 Accepted: 1459 Description Consider polynomials whose coefficients are 0 and 1. Addition of two polynomials is achieved by 'adding' the coeffici…
In data structure Hash, hash function is used to convert a string(or any other type) into an integer smaller than hash size and bigger or equal to zero. The objective of designing a hash function is to "hash" the key as unreasonable as possible.…
S - Making the Grade POJ - 3666 这个题目要求把一个给定的序列变成递增或者递减序列的最小代价. 这个是一个dp,对于这个dp的定义我觉得不是很好想,如果第一次碰到的话. 上网看了一下题解,dp[i][j]表示前面 i 位已经是有序的了,第 i+1 位变成第j大的最小代价. 这个转移可以保证有序这个条件. 递增递减d两次. 这个题目要离散化,为什么要离散化呢,推荐博客 我以前就是感觉数据大就要离散化,不然数组存不下,不过看了这篇题解感觉他讲的很对啊. #include…