题目描述 这是一道模板题. 维护一个 nnn 点的无向图,支持: 加入一条连接 uuu 和 vvv 的无向边 查询 uuu 和 vvv 的连通性 由于本题数据较大,因此输出的时候采用特殊的输出方式:用 000 或 111 代表每个询问的答案,将每个询问的答案一次从左到右排列,把得到的串视为一个二进制数,输出这个二进制数 mod 998244353\text{mod} ~ 998244353mod 998244353 的值. 输入格式 第一行包含两个整数 n,mn,mn,m,表示点的个数和操作的数…

题目描述 这是一道模板题. 维护一个 n 点的无向图,支持: 加入一条连接 u 和 v 的无向边 查询 u 和 v 的连通性 由于本题数据较大,因此输出的时候采用特殊的输出方式:用 0 或 1 代表每个询问的答案,将每个询问的答案依次从左到右排列,把得到的串视为一个二进制数,输出这个二进制数 mod 998244353 的值. 分析 简单的并查集. AC代码 #include <bits/stdc++.h> using namespace std; const int maxn=8000005…

内存限制:256 MiB时间限制:2000 ms标准输入输出 题目类型:传统评测方式:文本比较 上传者: 匿名 提交提交记录统计讨论 1 测试数据   题目描述 这是一道模板题. 维护一个 nnn 点的无向图,支持: 加入一条连接 uuu 和 vvv 的无向边 查询 uuu 和 vvv 的连通性 由于本题数据较大,因此输出的时候采用特殊的输出方式:用 000 或 111 代表每个询问的答案,将每个询问的答案一次从左到右排列,把得到的串视为一个二进制数,输出这个二进制数 mod 998244353…

链接:Destroying Array C. Destroying Array time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given an array consisting of n non-negative integers a1, a2, ..., an. You are going to destro…

Codeforces Round #268 (Div. 2)D Codeforces Round #268 (Div. 1)B CF468B D. Two Sets time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Little X has n distinct integers: p1, p2, ..., pn. He want…

D. Fools and Foolproof Roads   You must have heard all about the Foolland on your Geography lessons. Specifically, you must know that federal structure of this country has been the same for many centuries. The country consists of n cities, some pairs…

A. Arpa’s hard exam and Mehrdad’s naive cheat time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There exists an island called Arpa’s land, some beautiful girls live there, as ugly ones do. Me…

D. Dividing Kingdom II   Long time ago, there was a great kingdom and it was being ruled by The Great Arya and Pari The Great. These two had some problems about the numbers they like, so they decided to divide the great kingdom between themselves. Th…

A. Broken Clock time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given a broken clock. You know, that it is supposed to show time in 12- or 24-hours HH:MM format. In 12-hours format…

Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. One day Petya encountered a tre…