#include<iostream> #include<algorithm> #include<string> #include<cstring> #include<vector> using namespace std; * + ; int n; long long ans; struct Trie { int head[maxn]; //head[i]为第i个结点的左儿子编号 int next[maxn]; //next[i]为第i个结点的右
Description Bobo has a balanced parenthesis sequence P=p1 p2…pn of length n and q questions. The i-th question is whether P remains balanced after pai and pbi swapped. Note that questions are individual so that they have no affect on others. Parenth
Bobo has a balanced parenthesis sequence P=p 1 p 2…p n of length n and q questions. The i-th question is whether P remains balanced after p ai and p bi swapped. Note that questions are individual so that they have no affect on others. Parenthesis se
Description Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integers in the array. Now Edward wants to know the summation of the beauty of all contiguous subarray of the array A. Input There a
Description For an upcoming programming contest, Edward, the headmaster of Marjar University, is forming a two-man team from N students of his university. Edward knows the skill level of each student. He has found that if two students with skill leve
原题链接 http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1809 Description Bobo has a balanced parenthesis sequence P=p1 p2…pn of length n and q questions. The i-th question is whether P remains balanced after pai and pbi swapped. Note that questions ar
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