| 1063 | 奶牛大学 | 95 | 221 | 43.0% |
| 1064 | Feeding the Cows(需要 spcecail judge） | 8 | 37 | 21.6% |
| 1066 | Barn Tree(specail judge,oj没法判) | 1 | 18 | 5.6% |
| 1067 | 环形牛棚 | 33 | 63 | 52.4% |
| 1068 | 范围重构 Range Reconstruction specail judge | 34 | 39 | 87.2% |
| 1079 | 大数分解 | 3 | 7 | 42.9% |
| 1610 | Rank and File | 1 | 1 | 100.0% |
| 1611 | The Extent of the Problem | 1 | 1 | 100.0% |
| 1612 | Filtration | 1 | 1 | 100.0% |
| 1613 | Like Water for Clay | 1 | 2 | 50.0% |
| 1614 | Wandering Aimlessly | 1 | 1 | 100.0% |
| 1615 | Cables ... in Spaaace! | 1 | 1 | 100.0% |
| 1616 | Patterns and Pictures | 2 | 2 | 100.0% |
| 1617 | No Wormholes Were Harmed... | 1 | 1 | 100.0% |
| 1618 | Tribute (Editor) | 1 | 1 | 100.0% |
| 1619 | Arbiter | 3 | 3 | 100.0% |
| 1620 | ChaeYeon | 1 | 1 | 100.0% |
| 1621 | Dolphin | 1 | 1 | 100.0% |
| 1622 | FreeOpen | 4 | 24 | 16.7% |
| 1623 | FreeRadiant | 1 | 1 | 100.0% |
| 1624 | GCC | 3 | 3 | 100.0% |
| 1625 | Moonmist | 0 | 1 | 0.0% |
| 1626 | Slash | 1 | 1 | 100.0% |
| 1627 | Nova | 1 | 1 | 100.0% |
| 1628 | WHUgirls | 1 | 1 | 100.0% |
| 1809 | Problem A: CD | 2 | 3 | 66.7% |
| 1810 | Problem B: Alaska | 2 | 3 | 66.7% |
| 1811 | Problem C: Celebrity Split | 1 | 1 | 100.0% |
| 1812 | Problem D: Knight's Trip | 1 | 1 | 100.0% |
| 1813 | Problem E - Paintball | 1 | 1 | 100.0% |
| 2007 | 高峰负荷 | 4 | 5 | 80.0% |
| 2420 | HDU2822Dogs | 1 | 1 | 100.0% |
| 3679 | Advanced Fruits | 0 | 3 | 0.0% |
| 4532 | Contest Balloons | 0 | 0 | 0.0% |
| 7434 | Avian Darts | 0 | 3 | 0.0% |
| 7435 | Boring Task | 0 | 0 | 0.0% |
| 7436 | Cookies | 0 | 0 | 0.0% |
| 7437 | Distinct Sub-palindromes | 32 | 67 | 47.8% |
| 7438 | Fibonacci Sum | 9 | 33 | 27.3% |
| 7439 | Finding a MEX | 9 | 19 | 47.4% |
| 7440 | Hunting Monsters | 0 | 0 | 0.0% |
| 7441 | Integral Calculus | 0 | 0 | 0.0% |
| 7442 | Leading Robots | 11 | 46 | 23.9% |
| 7443 | Math is Simple | 0 | 0 | 0.0% |
| 7444 | Minimum Index | 5 | 6 | 83.3% |
| 7445 | Mow | 0 | 0 | 0.0% |
| 7458 | Tokitsukaze, CSL and Palindrome Game | 0 | 0 | 0.0% |
| 7459 | Lady Layton and Stone Game | 0 | 0 | 0.0% |
| 7460 | Tokitsukaze and Colorful Tree | 1 | 3 | 33.3% |
| 7461 | Tokitsukaze and Multiple | 15 | 17 | 88.2% |
| 7462 | Little W and Contest | 14 | 25 | 56.0% |
| 7463 | X Number | 0 | 0 | 0.0% |
| 7464 | Tokitsukaze and Rescue | 9 | 20 | 45.0% |
| 7465 | Triangle Collision | 0 | 4 | 0.0% |
| 7466 | Parentheses Matching | 8 | 11 | 72.7% |
| 7467 | Play osu! on Your Tablet | 0 | 0 | 0.0% |
| 7468 | Game on a Circle | 0 | 0 | 0.0% |
| 7469 | Anti-AK Problem | 0 | 0 | 0.0% |
| 7470 | Blow up the Enemy | 0 | 9 | 0.0% |
| 7471 | Contest of Rope Pulling | 8 | 24 | 33.3% |
| 7472 | Deliver the Cake | 15 | 35 | 42.9% |
| 7473 | Equal Sentences | 12 | 15 | 80.0% |
| 7474 | Fake Photo | 0 | 0 | 0.0% |
| 7475 | Go Running | 6 | 9 | 66.7% |
| 7476 | Head Maker | 0 | 0 | 0.0% |
| 7477 | Imperative Meeting | 0 | 0 | 0.0% |
| 7478 | Joyful Party | 0 | 0 | 0.0% |
| 7479 | Kindergarten Physics | 0 | 5 | 0.0% |
| 7480 | Last Problem | 8 | 9 | 88.9% |
| 7481 | Tetrahedron | 12 | 13 | 92.3% |
| 7482 | Funny String | 0 | 0 | 0.0% |
| 7483 | Boring Game | 8 | 36 | 22.2% |
| 7484 | Expression | 0 | 0 | 0.0% |
| 7485 | Array Repairing | 0 | 0 | 0.0% |
| 7486 | Alice and Bob | 0 | 0 | 0.0% |
| 7487 | Tree | 0 | 0 | 0.0% |
| 7488 | Set2 | 0 | 0 | 0.0% |
| 7489 | Paperfolding | 12 | 19 | 63.2% |
| 7492 | Set1 | 6 | 22 | 27.3% |
| 7493 | An Easy Matrix Problem | 0 | 0 | 0.0% |
| 7494 | Road To The 3rd Building | 13 | 24 | 54.2% |
| 7495 | Little Rabbit's Equation | 12 | 12 | 100.0% |
| 7496 | Borrow | 1 | 2 | 50.0% |
| 7497 | Asteroid in Love | 0 | 0 | 0.0% |
| 7498 | Fragrant numbers | 9 | 10 | 90.0% |
| 7499 | A Very Easy Graph Problem | 18 | 23 | 78.3% |
| 7501 | Yukikaze and Smooth numbers | 0 | 0 | 0.0% |
| 7502 | Divisibility | 11 | 13 | 84.6% |
| 7503 | Expectation | 4 | 4 | 100.0% |
| 7504 | Kirakira | 0 | 0 | 0.0% |
| 7566 | Animism | 0 | 0 | 0.0% |
| 7567 | Bitwise Xor | 0 | 0 | 0.0% |
| 7568 | Counting | 0 | 0 | 0.0% |
| 7569 | Decision | 0 | 0 | 0.0% |
| 7570 | Expectation | 0 | 0 | 0.0% |
| 7571 | Flower | 0 | 0 | 0.0% |
| 7572 | Game | 14 | 20 | 70.0% |
| 7573 | Heart | 0 | 0 | 0.0% |
| 7574 | Increasing and Decreasing | 11 | 12 | 91.7% |
| 7575 | Jogging | 12 | 20 | 60.0% |
| 7576 | Kcats | 0 | 0 | 0.0% |
| 7872 | zhx's contest | 7 | 12 | 58.3% |
| 7949 | Paint by Rectangles | 1 | 6 | 16.7% |
| 7969 | Sprinklers 2: Return of the Alfalfa | 3 | 5 | 60.0% |
| 7970 | Exercise | 1 | 7 | 14.3% |
| 7971 | Lots of Triangles | 1 | 3 | 33.3% |
| 7973 | Robotic Cow Herd | 1 | 1 | 100.0% |
| 7974 | Moocast | 12 | 20 | 60.0% |
| 7975 | 检查 Checklist | 23 | 35 | 65.7% |
| 7976 | Lasers and Mirrors | 27 | 137 | 19.7% |
| 7977 | 数干草包 Counting Haybales | 20 | 67 | 29.9% |
| 7978 | Cities and States | 24 | 50 | 48.0% |
| 7979 | 奶牛广播1 Moocast | 36 | 75 | 48.0% |
| 7980 | 方形牧场 | 60 | 89 | 67.4% |
| 7981 | 方块游戏 | 76 | 127 | 59.8% |
| 7982 | 奶牛信号 | 134 | 177 | 75.7% |
| 7985 | 困牛放牧 | 109 | 230 | 47.4% |
| 7986 | 大型植被恢复 | 51 | 80 | 63.8% |
| 7987 | Measuring Traffic | 29 | 62 | 46.8% |
| 7988 | 困牛放牧 | 26 | 115 | 22.6% |
| 7989 | 谷仓刷漆 | 32 | 70 | 45.7% |
| 7992 | 种植 | 28 | 77 | 36.4% |
| 7995 | Painting the Barn 谷仓刷漆 | 8 | 10 | 80.0% |
| 7997 | Cow Dating | 3 | 9 | 33.3% |
| 7998 | Moorio Kart | 2 | 5 | 40.0% |
| 7999 | The Cow Gathering | 2 | 2 | 100.0% |
| 8000 | Mowing Mischief | 1 | 2 | 50.0% |
| 8002 | Shell Game | 51 | 108 | 47.2% |
| 8003 | Sleepy Cow Sorting | 43 | 96 | 44.8% |
| 8005 | Guess the Animal | 2 | 2 | 100.0% |
| 8006 | Grass Planting | 44 | 92 | 47.8% |
| 8007 | Icy Perimeter | 23 | 52 | 44.2% |
| 8009 | 山顶风光 | 23 | 54 | 42.6% |
| 8011 | Cow Poetry 牛诗 | 8 | 17 | 47.1% |
| 8012 | Sleepy Cow Sorting | 14 | 29 | 48.3% |
| 8013 | 捷径 | 16 | 32 | 50.0% |
| 8015 | Redistricting | 13 | 17 | 76.5% |
| 8020 | Train Tracking 2 | 1 | 1 | 100.0% |
| 8022 | Favorite Colors | 8 | 10 | 80.0% |
| 8023 | Social Distancing | 18 | 35 | 51.4% |
| 8024 | 麦片 | 62 | 160 | 38.8% |
| 8026 | 牛粒子 | 46 | 83 | 55.4% |
| 8027 | 社交距离 I | 9 | 85 | 10.6% |
| 8028 | 社交距离 II | 15 | 34 | 44.1% |
| 8029 | 接触追踪 | 7 | 18 | 38.9% |
| 8033 | Timeline 时间线 | 13 | 31 | 41.9% |
| 8034 | Help Yourself 帮助自己 | 8 | 17 | 47.1% |
| 8035 | Delegation | 2 | 4 | 50.0% |
| 8036 | Swapity Swapity Swap | 25 | 86 | 29.1% |
| 8037 | Triangles | 13 | 49 | 26.5% |
| 8038 | 时钟树Timeline | 27 | 45 | 60.0% |
| 8039 | Triangles | 14 | 27 | 51.9% |
| 8040 | Mad Scientist | 13 | 22 | 59.1% |
| 8041 | Swapity Swap | 6 | 14 | 42.9% |
| 8048 | Censoring | 4 | 9 | 44.4% |
| 8049 | Fencing the Herd 围住牛群 | 2 | 5 | 40.0% |
| 8053 | Censoring (Bronze) 删减 | 3 | 6 | 50.0% |
| 8054 | COW | 18 | 26 | 69.2% |
| 8059 | Stampede 狂奔 | 13 | 26 | 50.0% |
| 8060 | Cow Routing 奶牛线路 | 17 | 62 | 27.4% |
| 8062 | Cow Routing | 13 | 39 | 33.3% |
| 8065 | Meeting Time | 13 | 21 | 61.9% |
| 8066 | 负载平衡p | 4 | 4 | 100.0% |
| 8068 | 圆形牛棚p | 1 | 1 | 100.0% |
| 8069 | Circular Barn | 3 | 7 | 42.9% |
| 8070 | 圆形牛棚的再次讨论 | 5 | 6 | 83.3% |
| 8071 | Fenced In | 7 | 23 | 30.4% |
| 8072 | Hoofball | 22 | 63 | 34.9% |
| 8073 | Taming the Herd | 37 | 90 | 41.1% |
| 8074 | Rest Stops | 35 | 108 | 32.4% |
| 8075 | Snow Boots | 8 | 13 | 61.5% |
| 8076 | Teleportation | 4 | 5 | 80.0% |
| 8077 | Snow Boots | 6 | 24 | 25.0% |
| 8079 | Directory Traversal | 3 | 5 | 60.0% |
| 8080 | Taming the Herd | 4 | 5 | 80.0% |
| 8083 | Team Tic Tac Toe | 2 | 9 | 22.2% |
| 8084 | Milking Order | 11 | 28 | 39.3% |
| 8085 | Family Tree | 6 | 13 | 46.2% |
| 8086 | 排序 | 14 | 25 | 56.0% |
| 8087 | Lemonade Line | 1 | 2 | 50.0% |
| 8088 | Multiplayer Moo | 1 | 1 | 100.0% |
| 8089 | Out of Sorts 2 | 1 | 1 | 100.0% |
| 8090 | Milking Order | 1 | 1 | 100.0% |
| 8091 | Talent Show | 10 | 12 | 83.3% |
| 8095 | Teleportation | 3 | 3 | 100.0% |
| 8101 | Clockwise Fence | 5 | 5 | 100.0% |
| 8102 | Sum of Distances | 1 | 2 | 50.0% |
| 8103 | Minimum Cost Paths | 1 | 1 | 100.0% |
| 8114 | Cave Paintings | 5 | 14 | 35.7% |
| 8115 | Non-Decreasing Subsequences | 1 | 1 | 100.0% |
| 8116 | Falling Portals | 1 | 4 | 25.0% |
| 8117 | 时间就是金钱 | 21 | 61 | 34.4% |
| 8118 | Farmer John Solves 3SUM | 7 | 30 | 23.3% |
| 8119 | Springboards | 2 | 4 | 50.0% |
| 8120 | 摘苹果 | 7 | 43 | 16.3% |
| 8121 | 偿还借款 | 9 | 17 | 52.9% |
| 8122 | Wormhole Sort | 1 | 3 | 33.3% |
| 8123 | 单词处理器 | 25 | 34 | 73.5% |
| 8124 | Photoshoot | 13 | 30 | 43.3% |
| 8125 | Race | 26 | 36 | 72.2% |