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1118 Birds in Forest (25 point(s)) PAT（并查集）

1118 Birds in Forest (25 point(s)) 并查集 题目 Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are supposed to help the scientists to count the maximum num

1118 Birds in Forest (25 分) （并查集

添加链接描述 #include<bits/stdc++.h> using namespace std; const int N=1e4+9; int fa[N]; int find(int x){ if(x==fa[x])return fa[x]; return fa[x]=find(fa[x]); } void merge(int x,int y){ x=find(x),y=find(y); if(x!=y)fa[y]=x; } int vis[N],cnt

浅色羽毛，轻盈身体，鸟儿风雨迁徙路 附：五十幅漂亮之鸟高清大图

文 / 王不留（微信公众号：考研英语笔记） 插播一段昨天译文《鹰嘴豆：豆中之王 | 经济学人全球早报精选20211213》的部分修订。 感谢 @杰特 的指正。 They’ve also identified less useful genes they believe can be bred out of the crop. be bred out of 表示“ 从……培

|Boids|鸟群模型|鸟群算法|学习笔记 - 论文学习

本文基于Craig Reynolds于1986年发布的《Flocks, Herds, and Schools: A Distributed Behavioral Model》进行学习和总结 通过一段原文，一段分析的方法，进行分析 概述 · · 摘要 The aggregate motion of a flock of birds, a herd of land animals, or a school of fish is

Angry Birds总结回顾

       历时一个月多一点，基本上完成的差不多了。        没有解决的问题是猪和木块只要一加声音就卡。              

PAT (Advanced Level) Practice 1118 Birds in Forest (25 分) 凌宸1642

PAT (Advanced Level) Practice 1118 Birds in Forest (25 分) 凌宸1642 题目描述： Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are supposed to help the scientist

重构-以多态取代条件表达式

复杂的条件逻辑是编程中最难理解的东西之一，给条件逻辑添加结构。 可以将条件逻辑拆分到不同的场景（或者叫高阶用例），从而拆分条件逻辑。使用类和多态能把逻辑的拆分表述得更清楚，多态是改善复杂条件逻辑的有力工具。 有两种常见场景， 一种是，好几个函数都有基于类型的switch语句，每个类型

五、HTML5 千纸鹤动画特效

文章目录 五、HTML5 千纸鹤动画特效5.1 图片预览5.2 index.html代码5.3 style.css代码5.5 index.js代码5.6 p5.min.js代码 五、HTML5 千纸鹤动画特效 5.1 图片预览 5.2 index.html代码 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <tit

用N.E.A.T遗传算法玩FlappyBird

我用python实现了一个完整的FlappyBird，而且还可以通过N.E.A.T遗传算法让它自己玩 项目介绍 使用Python实现《Flappy Bird》类，主要包括物理引擎和死亡机制以及像素精度碰撞检测 利用N.E.A.T实现神经网络，通过鸟类的每代繁殖，获得一定阈值的适应度，通过神经网络能计算出模拟场景的

CF922E Birds（dp）

这题是dp其实比较好看出来，问题是状态如何设计。 观察题目信息，一看W,X,B，大的吓人，显然不可能作为方程，那么题目中就没几个可以作为状态的了 那么显然将获取几个作为状态比较合理，进一步思考，我们要求的肯定是获取越多越好，并且获取相同的数量还剩下的魔法越多越好 这样状态就呼之欲出了，

MySQL——查询数据

1.基本查询 SELECT column FROM table;   2.有条件查询 SELECT common_name ,scientific_name FROM birds WHERE family_id =103 LIMIT 3;   3.结果排序 -- ORDER BY 默认升序（ASC）, 逆序（DESC） SELECT common_name,scientific_name FROM birds WHERE family_id =103 ORDER BY

1118 Birds in Forest (25分)

Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are supposed to help the scientists to count the maximum number of trees in the forest, and for any pair of

1118 Birds in Forest (25分) / 并查集

题目描述 AC代码 #include<bits/stdc++.h> using namespace std; int father[10005]; int find(int x){ while(father[x]>=0){ x=father[x]; } return x; } void Union(int a,int b){ int fa=find(a),fb=find(b); if(fa!=fb){ //按秩归并 if(father[fa]<fat

1118 Birds in Forest (25分) 并查集

Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are supposed to help the scientists to count the maximum number of trees in the forest, and for any pair of

PAT甲级——A1118 Birds in Forest【25】

Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are supposed to help the scientists to count the maximum number of trees in the forest, and for any pair of

1118 Birds in Forest-PAT甲级

Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are supposed to help the scientists to count the maximum number of trees in the forest, and for any pair of

1118 Birds in Forest (25 分)

1118 Birds in Forest (25 分) Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are supposed to help the scientists to count the maximum number of trees in t

每一步超详细！制作自己的voc数据集并通过yolov3训练

1 把自己的数据集打标记 用labelImg生成的是xml格式标记文件 https://blog.csdn.net/qq_34806812/article/details/81670310 https://blog.csdn.net/qq_34806812/article/details/81394646 这里建议大家用VOC和ILSVRC比赛的数据集，因为xml文件都是现成的，省去很多功夫。 或者可以