题目大意:给你三个字符串$A,B,C$,令$L=min(|A|,|B|,|C|)$,对每个$i\in[1,L]$,求出符合$A_{[a,a+i)}=B_{[b,b+i)}=C_{[c,c+i)}$的三元组$(a,b,c)$的个数 题解:先建一棵广义$SAM$,求出每个点可以到达的$A,B,C$的字串的个数,然后这个点贡献的值就是三个串分别的个数乘起来,发现一个点会对$[R_{fail_p+1},R_{p}]$的区间产生贡献,可以差分一下维护. 卡点:无 C++ Code: #include <a…

建一个广义后缀自动机统计一下就行,好长时间不敲后缀自动机调了半天~ #include <bits/stdc++.h> using namespace std; namespace IO { void setIO(string s) { string in=s+".in"; freopen(in.c_str(),"r",stdin); } }; #define ll long long const int maxn=600004; const ll mod…

March 18, 2016 Problem statement: https://www.hackerrank.com/challenges/two-strings/submissions/code/18506948 Julia likes to try a new way to train herself to expand C#/ C++ / Java / JavaScript languages, by reading the solutions, followed up with so…

StackOverFlow排错翻译 - Python字符串替换: How do I replace everything between two strings without replacing the strings? 原创连接: Python字符串替换 问题: Python:如何将两字符串之间的内容替换掉? I have this string(问题源码): str = ''' // DO NOT REPLACE ME // Anything might be here. Numbers…

Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. Converting the input string to integer is NOT allowed. You should NOT use internal library su…

Given two non-negative numbers num1 and num2 represented as string, return the sum of num1 and num2. Note: The length of both num1 and num2 is < 5100. Both num1 and num2 contains only digits 0-9. Both num1 and num2 does not contain any leading zero.…

Design an algorithm to encode a list of strings to a string. The encoded string is then sent over the network and is decoded back to the original list of strings. Machine 1 (sender) has the function: string encode(vector<string> strs) { // ... your…

Given a string, we can "shift" each of its letter to its successive letter, for example: "abc" -> "bcd". We can keep "shifting" which forms the sequence: "abc" -> "bcd" -> ... -> &quo…

Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrences of a character must be replaced with another character while preserving the order of characters.…

Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. 这道题让我们求两个字符串数字的相乘,输入的两个数和返回的数都是以字符串格式储存的,这样做的原因可能是这样可以计算超大数相乘,可以不受int或long的数值范围的约束,那么我们该如何来计算…