HDU 1002 A + B Problem II 高精度加法
HDU 1004 Let the Balloon Rise 字典树，map
HDU 1005 Number Sequence 求数列循环节
HDU 1010 Tempter of the Bon DFS，奇偶剪枝
HDU 1016 Prime Ring Problem 排序剪枝
HDU 1019 Least Common Multiple LCM
HDU 1022 Train Problem I 栈的基本操作
HDU 1027 Ignatius and the Princess II STL求逆康托展开
HDU 1032 The 3n + 1 problem 模拟
HDU 1052 Tian Ji -- The Horse Racing 数学
HDU 1054 Strategic Game 最小点权覆盖，树形DP
HDU 1060 Leftmost Digit log的妙用
HDU 1068 Girls and Boys 二分图的最大独立集
HDU 1075 What Are You Talking About 字典树
HDU 1086 You can Solve a Geometry Problem too 判断线段相交
HDU 1087 Super Jumping! Jumping! Jumping! LIS
HDU 1089 A+B for Input-Output Practice (I) I/O
HDU 1090 A+B for Input-Output Practice (II) I/O
HDU 1091 A+B for Input-Output Practice (III) I/O
HDU 1092 A+B for Input-Output Practice (IV) I/O
HDU 1093 A+B for Input-Output Practice (V) I/O
HDU 1094 A+B for Input-Output Practice (VI) I/O
HDU 1095 A+B for Input-Output Practice (VII) I/O
HDU 1096 A+B for Input-Output Practice (VIII) I/O
HDU 1102 Constructing Roads 最小生成树
HDU 1115 Lifting the Stone 多边形重心
HDU 1147 Pick-up sticks 判断线段相交
HDU 1150 Machine Schedule 二分图最小点覆盖
HDU 1157 Who's in the Middle 排序
HDU 1159 Common Subsequence LCS
HDU 1171 Big Event in HDU 多重背包
HDU 1222 Wolf and Rabbit 欧几里得算法
HDU 1294 Rooted Trees Problem 树的同构
HDU 1325 Is It A Tree? 树结构，图结构，并查集
HDU 1392 Surround the Trees 计算凸包
HDU 1394 Minimum Inversion Number 求逆序对
HDU 1498 50 years, 50 colors 二分图最小点覆盖
HDU 1507 Uncle Tom's Inherited Land* 二分图匹配
HDU 1509 Windows Message Queue 优先队列的基本应用
HDU 1556 Color the ball 树状数组区间修改单点查询
HDU 1597 find the nth digit 数学
HDU 1702 ACboy needs your help again! 栈和队列的基础应用
HDU 1754 I Hate It 线段树单点更新区间求极值
HDU 1757 A Simple Math Problem 矩阵乘法
HDU 1800 Flying to the Mars 字典树，map
HDU 1847 Good Luck in CET-4 Everybody! 巴什博弈
HDU 1848 Fibonacci again and again 尼姆博弈
HDU 1849 Rabbit and Grass 尼姆博弈
HDU 1850 Being a Good Boy in Spring Festival 尼姆博弈
HDU 1983 Kaitou Kid - The Phantom Thief (2) BFS+DFS
HDU 2045 不容易系列之(3)—— LELE的RPG难题 递推
HDU 2095 find your present (2) 位运算
HDU 2104 hide handkerchief 欧几里得算法
HDU 2108 Shape of HDU 向量叉积判断凸包
HDU 2136 Largest prime factor 筛法求素数
HDU 2138 How many prime numbers 米勒罗宾素数测试
HDU 2141 Can you find it? 二分查找
HDU 2188 悼念512汶川大地震遇难同胞——选拔志愿者 巴什博弈
HDU 2199 Can you solve this equation? 二分
HDU 2227 Find the nondecreasing subsequences 树状数组求逆序对
HDU 2451 Simple Addition Expression 排列组合
HDU 2473 Junk-Mail Filter 并查集虚拟根节点
HDU 2501 Tiling_easy version 递推
HDU 2665 Kth number 函数式线段树区间求K小
HDU 2680 Choose the best route 反向建图最短路
HDU 2719 The Seven Percent Solution 字符串操作
HDU 2722 Here We Go(relians) Again 最短路
HDU 2824 The Euler function 筛法求欧拉函数值
HDU 2852 KiKi's K-Number 权值线段树
HDU 2874 Connections between cities LCA，动态树
HDU 2899 Strange fuction 三分，导数
HDU 3015 Disharmony Trees 树状数组
HDU 3030 Increasing Speed Limits 树状数组求逆序对延展
HDU 3038 How Many Answers Are Wrong 加权并查集
HDU 3307 Description has only two Sentences 数学
HDU 3336 Count the string KMP求前缀
HDU 3350 #define is unsafe DFS
HDU 3360 National Treasures 二分图匹配
HDU 3371 Connect the Cities 最小生成树
HDU 3415 Max Sum of Max-K-sub-sequence 单调队列
HDU 3486 Interviewe 二分检索，ST算法，倍增
HDU 3501 Calculation 2 欧拉函数扩展应用
HDU 3571 N-dimensional Sphere 数学
HDU 3579 Hello Kiki 不互质的中国剩余定理
HDU 3625 Examining the Rooms 第一类斯特林数
HDU 4267 A Simple Problem with Integers 分类维护树状数组
HDU 4417 Super Mario 函数式线段树求区间小于等于k的数个数