K XOR Clique BaoBao has a sequence a​1​​,a​2​​,...,a​n​​. He would like to find a subset S of {1,2,...,n} such that ∀i,j∈S, a​i​​⊕a​j​​<min(a​i​​,a​j​​) and ∣S∣ is maximum, where ⊕ means bitwise exclusive or. Input There are multiple test cases. The…

BaoBao has a sequence a​1​,a​2,...,a​n. He would like to find a subset S of {1,2,...,n} such that ∀i,j∈S, a​i ⊕a​j<min(ai ,aj) and ∣S∣ is maximum, where ⊕ means bitwise exclusive or. Input There are multiple test cases. The first line of input contai…

XOR Clique(按位异或): 传送门:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=4057 准备:异或:参加运算的两个数据,按二进制位进行“异或”运算. 运算规则:0^0=0,   0^1=1, 1^0=1,    1^1=0: 即:参加运算的两个对象,如果两个相应位为“异”,则该位结果为1,否则为0: 题意: 有一个a1到an的序列,问能不能找到一个长度为S的序列,对于在S里面的任意的i,j满足a​i​​⊕a​…

XOR Clique BaoBao has a sequence a​1​,a​2,...,a​n. He would like to find a subset S of {1,2,...,n} such that ∀i,j∈S, a​i ⊕a​j<min(ai ,aj) and ∣S∣ is maximum, where ⊕ means bitwise exclusive or. Input There are multiple test cases. The first line of i…

A    Live Love 水. #include<bits/stdc++.h> using namespace std; typedef long long ll; ; const int INF = 0x3f3f3f3f; ; ; int n, m; inline void RUN() { int t; scanf("%d", &t); while (t--) { scanf("%d %d", &n, &m); int an…

A Live Love 水 #include <algorithm> #include<cstdio> #include<cstring> using namespace std; typedef long long ll; const int inf = 0x3f3f3f3f; ; int main() { int t; scanf("%d", &t); while(t--) { int n,m; scanf("%d%d"…

A Live Love DreamGrid is playing the music game Live Love. He has just finished a song consisting of n notes and got a result sequence A​1​​,A​2​​,...,A​n​​ (A​i​​∈ {PERFECT, NON-PERFECT}). The score of the song is equal to the max-combo of the resul…

A题 A Live Love 原题链接:https://pintia.cn/problem-sets/1036903825309761536/problems/1041155943483625472 #include<bits/stdc++.h> #include<stdio.h> #include<iostream> #include<cmath> #include<math.h> #include<queue> #include&…

题目链接:https://atcoder.jp/contests/abc121/tasks/abc121_d 题目很裸(Atcoder好像都比较裸 就给一个区间求异或和 n到1e12 肯定不能O(n)推 那肯定得通过异或的一些性质 用$f\left( a,b\right)$表示[a,b]区间的异或和 我只观察出了$f\left( 2^{a},2^{b}-1\right)$的异或和肯定为0. 通过$f\left( 2^{a},2^{a+1}-1\right)$每一位都会出现偶数次 例如 [4,8)…

xor There is a tree with nn nodes. For each node, there is an integer value a_ia​i​​, (1 \le a_i \le 1,000,000,0001≤a​i​​≤1,000,000,000 for 1 \le i \le n1≤i≤n). There is qq queries which are described as follow: Assume the value on the path from node…