添加题解

基础调试

选择编程语言

比赛策略

编程比赛

参与贡献

在命令行中使用 C++

数据类型

如何调试

C++ 调试

前置知识要求

快速输入输出

（选学）C++——编写泛型代码

输入与输出

算法竞赛简介

（可选）C++ Lambda 表达式

资源：学习编程

模块介绍

信息学奥林匹克竞赛

如何练习

资源：算法竞赛

资源：美国相关

在本地运行代码

在线运行代码

USACO 集训营

USACO 常见问题

USACO 月赛题目

如何使用本指南

使用 MDX

非典型问题

分类讨论

使用递归的完全搜索

USACO 铜组补充练习

基础完全搜索

数据结构简介

图简介

贪心算法简介

集合与映射简介

排序简介

矩形几何

模拟

时间复杂度

组合数学

整除

模运算

Binary Search

Binary Search on a Sorted Array

Additional Practice for USACO Silver

Flood Fill

Introduction to Functional Graphs

Graph Traversal

Greedy Algorithms with Sorting

Intro to Bitwise Operators

Introduction to Tree Algorithms

More on Prefix Sums

Introduction to Prefix Sums

Priority Queues

Custom Comparators and Coordinate Compression

Two Pointers

DP on Trees - Solving For All Roots

Additional Practice for USACO Gold

(Optional) Sorted Sets with Custom Comparators

Bitmask DP

Range DP

DP on Trees - Introduction

Disjoint Set Union

Digit DP

Hashing

(Optional) Hashmaps

Introduction to DP

More Operations on Sorted Sets

Knapsack DP

(Optional) LCA with Euler Tour

Longest Increasing Subsequence

Minimum Spanning Trees

(Optional) Meet In The Middle

Point Update Range Sum

Paths on Grids

Shortest Paths with Non-Negative Edge Weights

Sliding Window

Stacks

Optimizing Unimodal Functions

Topological Sort

(Optional) Euler Tour Technique

Shortest Paths with Unweighted Edges

2D Range Queries

Binary Jumping

(Optional) Bitsets

Centroid Decomposition

Additional Practice for USACO Platinum

Convex Hull

Convex Hull Trick

Divide & Conquer - DP

Divide & Conquer - SRQ

Sum over Subsets DP

Geometry Primitives

Heavy-Light Decomposition

Matrix Exponentiation

Small-To-Large Merging

Inclusion-Exclusion Principle

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 return _jsxs(_Fragment, {
 children: [_jsx(_components.p, {
 children: "分类讨论题可以拆分成若干种情况，再分别求解每一种情况。"
 }), "\n", _jsx(_components.p, {
 children: "这类题通常需要画出大量情况，并观察每一种情况的特点。"
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 children: "我们可以尝试找出不同情况之间的相似之处，从而用同一种方法解决其中多种情况。"
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 children: "我们分别求最少和最多移动次数。下文把奶牛所在的位置称为“元素”；如果两个元素\n之间没有其他元素，就称它们相邻。"
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Source	Problem Name	Difficulty	Tags
CF	Three Logos	Easy	Show Tags Casework
Bronze	Fence Painting	Medium	Show Tags Casework
Bronze	Social Distancing I	Medium	Show Tags Casework
Bronze	Hoof Paper Scissors Minus One	Medium	Show Tags Casework
Bronze	Leaders	Hard	Show Tags Casework
Silver	Spaced Out	Very Hard	Show Tags Casework

Table of Contents

Table of Contents

解答——Sleepy Cow Herding

题目

Module Progress: