题目描述 The cows enjoy mooing at the barn because their moos echo back, although sometimes not completely. Bessie, ever the excellent secretary, has been recording the exact wording of the moo as it goes out and returns. She is curious as to just how mu…
https://www.luogu.org/problem/show?pid=2957 题目描述 The cows enjoy mooing at the barn because their moos echo back, although sometimes not completely. Bessie, ever the excellent secretary, has been recording the exact wording of the moo as it goes out a…
https://www.luogu.org/problem/P2957 题目描述 The cows enjoy mooing at the barn because their moos echo back, although sometimes not completely. Bessie, ever the excellent secretary, has been recording the exact wording of the moo as it goes out and retur…
传送门 团队里的hash水题,数据小的不用hash都能过.. 也就是前缀hash,后缀hash,再比较一下就行. ——代码 #include <cstdio> #include <cstring> #define ULL unsigned long long int n, m, ans; ], s2[]; ULL ], sum1[], sum2[], bit1[], bit2[]; inline int max(int x, int y) { return x > y ? x…
题目描述 Farmer John is building a brand new, NNN -story barn, with the help of his KKK cows ( 1≤N≤K≤10121 \leq N \leq K \leq 10^{12}1≤N≤K≤1012 and N≤105N \leq 10^5N≤105 ). To build it as quickly as possible, he needs your help to figure out how to alloc…
题目描述It's milking time at Farmer John's farm, but the cows have all run away! Farmer John needs to round them all up, and needs your help in the search. FJ's farm is a series of N (1 <= N <= 200,000) pastures numbered 1...N connected by N - 1 bidirec…
题目传送门 逃跑的Barn 题目描述 It's milking time at Farmer John's farm, but the cows have all run away! Farmer John needs to round them all up, and needs your help in the search. FJ's farm is a series of N (1 <= N <= 200,000) pastures numbered 1...N connected b…
