Title Solved Submit
Fiber Communications
20
157
Power Hungry Cows
11
33
Cow Cycling
9
16
Rebuilding Roads
9
8
Triangular Pastures
6
8
Chores
3
13
Dessert
3
2
Extra Krunch
5
9
BUY LOW, BUY LOWER
5
7
Problem D: Blocks
1
0
Bucket Brigade
10
14
Social Distancing II
1
4
寻找零号病牛(patient zero)
1
2
USACO-2020Open-Silver03 - The Moo Particle
2
2
Cow Jog (Bronze) 奶牛慢跑
3
3
Cow Jog (Silver) 奶牛慢跑-白银级
3
3
【USACO2009DEC】过路费
3
2
【USACO2009DEC】电视游戏
4
2
【USACO2009DEC】高山滑雪
4
3
【USACO2009DEC】乐谱
5
11
【USACO2013JAN】奶牛排队{ Gold题1}
3
2
【USACO2014JAN】滑雪场评级{ Gold题3}
1
0
【USACO2014FebGold】Roadblock
2
1
【USACO2014JAN】滑雪场设计{Bronze题1}
3
2
【USACO2014JAN】滑雪降速{silver题1}
2
0
【USACO2014JAN】滑雪录像{silver题3}
70
143
【USACO2014JAN】滑雪场建设{ Gold题2}
1
0
USACO2020Open P1 - Social Distancing 01
2
3
USACO2021月赛1月份铜级第一题 - Uddered but not Herd
35
69
USACO 2021 January Contest, Bronze Even More Odd Photos
1
7
USACO2020Jan - Word Processor
6
10
USACO2019Dec - Silver3 - Milk Visits
6
25
USACO2021FebP1 Year of the Cow
4
6
P1217 [USACO1.5] 回文质数 Prime Palindromes（普及-）
28
115
USACO 2017 US Open Contest, Gold Problem 3. Modern Art 2
1
3
USACO 2021 February Contest, Gold Problem 2. Modern Art 3
4
13
USACO 2019 US Open Contest, Bronze Problem 2. Milk Factory
1
1
USACO2021Open Siver02 - Do you know your ABC?
0
1
USACO2021Open Gold01 - United Cows of Farmer John
2
3
USACO2021Open Siver01 -Maze Tac Toe
2
5
USACO 2021Open- Gold - P2 - Portals
2
5
【USACO2007MAR】月度花费
3
2
【USACO2008OCT】牧场行走
29
52
2.2.3 Runaround Numbers循环数
8
14
【USACO2007Jan】保护花朵
76
165
【USACO2007Jan】排队
15
28
【USACO2007Jan】解题
4
2
【USACO2007Jan】考试
1
0
【USACO2007Jan】最高的奶牛
2
1
【USACO2007Feb】新牛舍
2
1
【USACO2007Feb】牛排序
2
2
【USACO2007Feb】牛的词典
2
1
【USACO2007Feb】池塘里的荷叶2
1
0
【USACO2007Feb】奶牛派对
2
0
【USACO2007MAR】平衡的队列
1
0
【USACO2007MAR】奶牛交通
1
0
【USACO2007MAR】平衡的阵容
2
0
【USACO2007OPEN】地平线上的高楼
2
0
【USACO2007OPEN】翻瓦片游戏
1
0
【USACO2007OCT】贝茜的私人草坪
2
0
【USACO2007OCT】绕过障碍
0
0
【USACO2007NOV】奶牛跨栏
0
0
【USACO2007NOV】挤奶时间
1
0
【USACO2007NOV】队列变换
1
0
【USACO2007DEC】宝石手镯
3
0
【USACO2007DEC】修建道路
1
0
【USACO2008JAN】奶牛的比赛
1
0
【USACO2008JAN】贝茜的晨练计划
2
0
【USACO2008JAN】架设电话线
1
0
【USACO2008FEB】连线游戏
1
0
【USACO2008FEB】流星雨
2
0
【USACO2008FEB】麻烦的聚餐
1
0
【USACO2008MAR】干草打包机
2
0
【USACO2008MAR】游荡的奶牛
1
0
【USACO2008MAR】渡河问题
2
1
【USACO2008OPEN】三岔路口
134
228
【USACO2008OPEN】名字的能量
3
1
【USACO2008OPEN】奶牛飞车
3
1
【USACO2008OPEN】危险的寻宝路
2
1
【USACO2008NOV】采购干草
2
1
【USACO2008NOV】农场的哨岗
2
1
【USACO2008NOV】管理时间
4
4
【USACO2008DEC】出售干草
7
5
【USACO2008DEC】拍头
3
4
【USACO2009JAN】激光通讯
4
7
【USACO2009JAN】最佳牧场
3
3
【USACO2009MAR】沙堡
4
3
【USACO2009MAR】奶牛飞盘队
26
61
Cheapest Palindrome poj3280
3
3
Balanced Lineup排队
16
54
2.3.3 file zerosum
4
2
4.4.1 Shuttle Puzzle (shuttle)
1
0
3.1.1 Agri-Net最短网络
16
21
2.2.2 Subset Sums集合
1
1
1.5.2 Prime Palindromes 回文质数
38
140
1.4.4 Mother's Milk 母亲的牛奶
3
2
2.1.2 Ordered Fractions顺序的分数
9
16
1.3.2 Barn Repair 修理牛棚
1
0
1.2.5 Dual Palindromes 双重回文数
18
19
1.2.4 Palindromic Squares 回文平方数
16
26
1.2.2 Transformations 方块转换
1
0
1.2.1 Milking Cows 挤牛奶
3
2
1.1.4 Broken Necklace 坏掉的项链
9
10
1.1.2 Greedy Gift Givers　贪婪的送礼者
4
2
2.3.1 Longest Prefix最长前缀 IOI'96
2
5
2.3.2 Cow Pedigrees 奶牛家谱
2
1
3.1.3 Humble Numbers丑数
1
4
3.1.4 Shaping Regions形成的区域
16
63
3.1.5 Contact 联系
2
2
2.4.2 Overfencing穿越栅栏
1
0
2.4.3 Cow Tours牛的旅行
1
0
2.4.4 Bessie Come Home 回家
3
3
2.4.5 Fractions to Decimals 分数化小数
2
1
3.2.6 Sweet Butter 香甜的黄油
6
5
3.3.3 Camelot亚瑟王的宫殿
2
1
3.3.4 Home on the Range 家的范围
3
9
3.1.2 Score Inflation总分
1
0
【USACO2008FEB】酒店
4
4
3.2.1 Factorials阶乘
3
3
3.1.6 Stamps 邮票
1
0
3.2.2 Stringsobits01串 Kim Schrijvers
1
0
3.3.2 Shopping Offers商店购物
1
0
3.3.5 A Game游戏
1
0
3.4.2 American Heritage美国血统
1
0
3.4.3 Electric Fences电网
1
0
3.4.4 Raucous Rockers“破锣摇滚”乐队
1
0
Friday the Thirteenth 黑色星期五
24
48
3.2.3 Spinning Wheels纺车的轮子
1
0
3.2.4 Feed Ratios饲料调配
1
0
3.2.5 Magic Squares 魔板
2
1
3.3.5 A Game (game1)
2
0
4.1.1 Beef McNuggets (nuggets)
1
0
4.2.1 Drainage Ditches (ditch)
1
0
4.2.3 Job Processing (job)
1
0
4.3.1 Buy Low, Buy Lower (buylow)
1
0
4.3.3 Street Race (race3)
1
0
5.1.1 Fencing the Cows (fc)
1
0
4.4.2 Pollutant Control (milk6)
1
0
4.4.3 Frame Up (frameup)
1
0
5.1.3 Musical Themes (theme)
1
0
【USACO2007OCT】超级弹珠
6
4
P2866 [USACO06NOV]Bad Hair Day S
15
15
P9011 [USACO23JAN] Air Cownditioning II B
17
19
P2958 [USACO09OCT] Papaya Jungle G
43
93
P8185 [USACO22FEB] Blocks B
4
5
P6065 [USACO05JAN] Sumsets S
3
3
P2978 [USACO10JAN] Tea Time S
7
8
P8184 [USACO22FEB] Photoshoot 2 B
3
4
P3669 [USACO17OPEN] Paired Up S
7
8
P3405 [USACO16DEC] Cities and States S
3
3
P2873 [USACO07DEC] Mud Puddles S
13
18
P8897 [USACO22DEC] Cow College B
5
5
P7993 [USACO21DEC] Lonely Photo B
3
4
P8267 [USACO22OPEN] Counting Liars B
18
25
P4122 [USACO17DEC] Blocked Billboard B
0
23
P2913 [USACO08OCT] Wheel Rotation G
20
27
P6200 [USACO07OCT] Super Paintball G
26
34
P5117 [USACO18DEC] The Bucket List B
16
18
2.1.1 The Castle城堡
1
1
2.1.4 Healthy Holsteins健康的荷斯坦奶牛
6
9
1.5.3 Superprime Rib 特殊的质数肋骨
30
67
1.5.4 Checker Challenge 跳棋的挑战
1
1
2.4.1 The Tamworth Two 两只塔姆沃斯牛
1
1
【USACO2007NOV】分配防晒霜
1
2
【USACO2009NOV】农场技艺大赛
1
2
2.4.4 Bessie Come Home (comehome)
4
8
抓住那头奶牛 ( catch ) usaco 2007 Open silver
93
216
P6181 [USACO10OPEN] Mountain Watching S
4
9
P1535 [USACO08MAR] Cow Travelling S
1
5
P8268 [USACO22OPEN] Alchemy B
2
2
P5831 [USACO19DEC] Cow Gymnastics B
9
10
P1376 [USACO05MAR] Yogurt factory 机器工厂
9
15
P8090 [USACO22JAN] Herdle B
1
1
P6179 [USACO15DEC] High Card Wins S
22
54
P7994 [USACO21DEC] Air Cownditioning
1
11
P3040 [USACO12JAN] Bale Share S
2
18
P6174 [USACO16JAN] Angry Cows S
7
27
P1215 [USACO1.4] 母亲的牛奶 Mother's Milk
3
10
P2970 [USACO09DEC] Selfish Grazing S
11
13
P1219 [USACO1.5] 八皇后 Checker Challenge
1
1
P1444 [USACO1.3] 虫洞 wormhole
0
0
P1461 [USACO2.1] 海明码 Hamming Codes
0
0
P1466 [USACO2.2] 集合 Subset Sums
2
3
P2385 [USACO07FEB] Bronze Lilypad Pond B
1
1
P2739 [USACO4.4] 棋盘游戏Shuttle Puzzle
0
0
P2949 [USACO09OPEN] Work Scheduling G
0
0
P2968 [USACO09DEC] Bobsledding S
1
1
P2970 [USACO09DEC] Selfish Grazing S
5
5
P2983 [USACO10FEB] Chocolate Buying S
5
7
P3030 [USACO11NOV] Tile Exchanging S
0
0
P3040 [USACO12JAN] Bale Share S
0
0
P3093 [USACO13DEC] Milk Scheduling S
0
0
P3416 [USACO16DEC] Moocast S
0
0
P4089 [USACO17DEC] The Bovine Shuffle S
0
0
P5542 [USACO19FEB] Painting The Barn S
0
0
P6140 [USACO07NOV] Best Cow Line S
1
1
P6174 [USACO16JAN] Angry Cows S
0
1
P6179 [USACO15DEC] High Card Wins S
1
1
P6205 [USACO06JAN] Dollar Dayz S
1
1
P6208 [USACO06OCT] Cow Pie Treasures G
1
4
P6243 [USACO06OPEN] The Milk Queue G
0
0
P1208 [USACO1.3] 混合牛奶 Mixing Milk
0
0
P1211 [USACO1.3] 牛式 Prime Cryptarithm
0
0
P1458 [USACO2.1] 顺序的分数 Ordered Fractions
6
6
P1459 [USACO2.1] 三值的排序 Sorting a Three-Valued Sequence
0
0
P1588 [USACO07OPEN] Catch That Cow S
0
0
P1596 [USACO10OCT] Lake Counting S
0
0
P4817 [USACO15DEC] Fruit Feast G（入门）
4
7
P1649 [USACO07OCT] Obstacle Course S（入门）
5
7
P2955 [USACO09OCT] Even? Odd? G（入门）
0
0
P2956 [USACO09OCT] The Robot Plow G（入门）
0
0
P2907 [USACO08OPEN] Roads Around The Farm S（入门）
0
0
P1697 [USACO18JAN] Lifeguards B（入门）
1
1
P2676 [USACO07DEC] Bookshelf B（入门）
0
0
P5832 [USACO19DEC] Where Am I? B（入门）
0
0
P2911 [USACO08OCT] Bovine Bones G（入门）
0
0
P9946 [USACO20JAN] Word Processor B（入门）
0
1
P6206 [USACO06OCT] Another Cow Number Game G（入门）
0
0
P9940 [USACO21JAN] Uddered but not Herd B（入门）
0
0
P1200 [USACO1.1] 你的飞碟在这儿 Your Ride Is Here（入门）
4
5
P9955 [USACO20DEC] Do You Know Your ABCs? B（入门）
0
0
P9950 [USACO20FEB] Mad Scientist B（入门）
0
0
P8185 [USACO22FEB] Blocks B（普及-）
0
0
P6065 [USACO05JAN] Sumsets S（普及-）
0
0
P2978 [USACO10JAN] Tea Time S（普及-）
4
4
P9010 [USACO23JAN] Leaders B（普及-）
0
0
P1467 [USACO2.2] 循环数 Runaround Numbers（普及-）
0
0
P3669 [USACO17OPEN] Paired Up S（普及-）
3
3
P2873 [USACO07DEC] Mud Puddles S（普及-）
6
6
P3405 [USACO16DEC] Cities and States S（普及-）
0
0
P8184 [USACO22FEB] Photoshoot 2 B（普及-）
0
0
P8897 [USACO22DEC] Cow College B（普及-）
5
8
P2959 [USACO09OCT] The Leisurely Stroll G（普及-）
5
5
P2913 [USACO08OCT] Wheel Rotation G（普及-）
4
5
P5117 [USACO18DEC] The Bucket List B（普及-）
0
0
P8267 [USACO22OPEN] Counting Liars B（普及-）
2
2
P9123 [USACO23FEB] Watching Mooloo B（普及-）
0
0
P7993 [USACO21DEC] Lonely Photo B（普及-）
0
0
P1208 [USACO1.3] 混合牛奶 Mixing Milk（普及-）
0
0
P2958 [USACO09OCT] Papaya Jungle G（普及-）
0
0
P9012 [USACO23JAN] Moo Operations B（普及-）
0
0
P6200 [USACO07OCT] Super Paintball G（普及-）
1
1
P6244 [USACO06OPEN] County Fair Events S（普及-）
0
0
P6184 [USACO08OCT] Building A Fence G（普及-）
0
0
P5834 [USACO19DEC] MooBuzz S（普及-）
2
2
P2965 [USACO09NOV] The Grand Farm-off S（普及-）
0
0
P8091 [USACO22JAN] Non-Transitive Dice B（普及-）
0
0
P2693 [USACO1.3] 号码锁 Combination Lock（普及-）
7
9
P2035 [USACO08JAN] iCow B（普及-）
3
3
【USACO2014OPEN】牧场装饰{bronze题3}
1
3
P2677 [USACO07DEC] Bookshelf 2 B（普及-）
0
0
P2945 [USACO09MAR] Sand Castle S（普及-）
0
0
P5116 [USACO18DEC] Mixing Milk B（普及-）
0
0
P1201 [USACO1.1] 贪婪的送礼者Greedy Gift Givers（普及-）
0
0
P2722 [USACO3.1] 总分 Score Inflation（普及-）
0
0
P1588 [USACO07OPEN] Catch That Cow S（普及-）
0
0
P9122 [USACO23FEB] Stamp Grid B（普及-）
0
0
P1211 [USACO1.3] 牛式 Prime Cryptarithm（普及-）
0
0
P3009 [USACO11JAN] Profits S（普及-）
5
7
P3131 [USACO16JAN] Subsequences Summing to Sevens S（普及-）
3
3
P9015 [USACO23JAN] Moo Route S（普及-）
0
0
P4379 [USACO18OPEN] Lemonade Line S（普及-）
1
1
P2909 [USACO08OPEN] Cow Cars S（普及-）
0
0
P1206 [USACO1.2] 回文平方数 Palindromic Squares（普及-）
4
6
P9945 [USACO21FEB] Clockwise Fence B（普及-）
0
0
P1207 [USACO1.2] 双重回文数 Dual Palindromes（普及-）
7
8
P9121 [USACO23FEB] Hungry Cow B（普及-）
0
0
P9956 [USACO20DEC] Daisy Chains B（普及-）
0
0
P3078 [USACO13MAR] Poker Hands S（普及-）
0
0
P2969 [USACO09DEC] Music Notes S（普及-）
1
2
P2908 [USACO08OPEN] Word Power S（普及-）
3
4
P2837 [USACO08FEB] Dining Cows B（普及-）
0
0
P1202 [USACO1.1] 黑色星期五Friday the Thirteenth（普及-）
6
9
P1696 [USACO18JAN] Blocked Billboard II B（普及-）
0
0
P1676 [USACO05FEB] Aggressive cows G（普及-）
0
0
P1204 [USACO1.2] 挤牛奶Milking Cows（普及-）
0
0
P2616 [USACO10JAN] Buying Feed, II S（普及-）
2
3
P2666 [USACO07OCT] Bessie's Secret Pasture S（普及-）
0
0
P1596 [USACO10OCT] Lake Counting S（普及-）
0
0
P4122 [USACO17DEC] Blocked Billboard B（普及-）
3
6
P1459 [USACO2.1] 三值的排序 Sorting a Three-Valued Sequence（普及-）
0
0
P6183 [USACO10MAR] The Rock Game S（普及-）
0
0
P2952 [USACO09OPEN] Cow Line S（普及-）
9
12
P5541 [USACO19FEB] Sleepy Cow Herding S（普及-）
0
0
P2639 [USACO09OCT] Bessie's Weight Problem G（普及-）
0
0
P2871 [USACO07DEC] Charm Bracelet S（普及-）
0
0
P2925 [USACO08DEC] Hay For Sale S（普及-）
0
0
P1458 [USACO2.1] 顺序的分数 Ordered Fractions（普及-）
8
9
P1203 [USACO1.1] 坏掉的项链 Broken Necklace（普及-）
0
0
P2957 [USACO09OCT] Barn Echoes G（普及-）
12
14
P9937 [USACO21OPEN] Acowdemia I B（普及-）
0
0
P9011 [USACO23JAN] Air Cownditioning II B（普及-）
1
1
P3650 [USACO1.3] 滑雪课程设计Ski Course Design（普及-）
0
0
P1218 [USACO1.5] 特殊的质数肋骨 Superprime Rib（普及-）
6
7
P3056 [USACO12NOV] Clumsy Cows S（普及-）
0
0
P1827 [USACO3.4] 美国血统 American Heritage（普及-）
0
0
P3612 [USACO17JAN] Secret Cow Code S（普及-）
0
0
P1460 [USACO2.1] 健康的荷斯坦奶牛 Healthy Holsteins（普及-）
5
6
P1216 [USACO1.5] [IOI1994]数字三角形 Number Triangles（普及-）
2
3
P1700 [USACO19OPEN] Milk Factory B（普及-）
0
0
P1205 [USACO1.2] 方块转换 Transformations
0
0
P2338 [USACO14JAN] Bessie Slows Down S
0
0
P2340 [USACO03FALL] Cow Exhibition G
0
0
P2853 [USACO06DEC] Cow Picnic S
0
0
P2858 [USACO06FEB] Treats for the Cows G/S
0
0
P2884 [USACO07MAR] Monthly Expense S
0
0
P2896 [USACO08FEB] Eating Together S
0
4
P2920 [USACO08NOV] Time Management S
0
0
P2926 [USACO08DEC] Patting Heads S
0
0
P2960 [USACO09OCT] Invasion of the Milkweed G
0
0
P3015 [USACO11FEB] Best Parenthesis S
0
0
P3016 [USACO11FEB] The Triangle S
0
0
P3019 [USACO11MAR] Meeting Place S
0
0
P3021 [USACO11MAR] Bovine Bridge Battle S
0
0
P3029 [USACO11NOV] Cow Lineup S
0
0
P3068 [USACO13JAN] Party Invitations S
0
0
P3074 [USACO13FEB] Milk Scheduling S
0
0
P3111 [USACO14DEC] Cow Jog S
0
0
P3118 [USACO15JAN] Moovie Mooving G
0
0
P3142 [USACO16OPEN] Field Reduction S
0
0
P3143 [USACO16OPEN] Diamond Collector S
0
0
P3144 [USACO16OPEN] Closing the Farm S
0
0
P3146 [USACO16OPEN] 248 G
0
0
P3662 [USACO17FEB] Why Did the Cow Cross the Road II S
0
0
P4086 [USACO17DEC] My Cow Ate My Homework S
0
0
P4825 [USACO15FEB] Cow Hopscotch S
0
0
P5119 [USACO18DEC] Convention S
0
0
P6099 [USACO19FEB] Dishwashing G
1
2
P6145 [USACO20FEB] Timeline G
0
0
P6171 [USACO16FEB] Fenced In G
0
0
P6207 [USACO06OCT] Cows on Skates G
0
0
P6245 [USACO06OPEN] The Climbing Wall S
0
0