ID 题目 显示标签 隐藏标签 AC / 尝试 难度
6766 lg5365   [SNOI2017] 英雄联盟 1 / 2 10
1042 lg5764   D70 最短路 +爆搜[CQOI2005] 新年好 21 / 31 3
2648 lg5788   C101【模板】单调栈 45 / 203 7
6033 lg5849   [IOI 2015] boxes 1 / 1 10
10796 lg6232   [eJOI 2019] 挂架 2 / 2 10
6873 lg6281   [USACO20OPEN] Social Distancing S 2 / 12 10
2009 lg7076   [CSP-S 2020] 动物园 4 / 5 10
2000 lg7113   D154 拓扑排序[NOIP2020] 排水系统 3 / 13 9
7078 lg7148   [USACO20DEC] Cowntagion S 13 / 92 8
10777 lg7177   [COCI 2014/2015 #4] MRAVI 10 / 22 6
7067 lg7300   [USACO21JAN] No Time to Paint S 10 / 94 9
9040 lg7404   [JOI 2021 Final] 有趣的家庭菜园 4 12 / 49 7
7056 lg7412   [USACO21FEB] Year of the Cow S 9 / 152 9
7665 lg7517   [省选联考 2021 B 卷] 数对 3 / 5 10
10834 lg7544    [COCI 2019/2020 #4] Nivelle 6 / 10 9
7043 lg7556   [USACO21OPEN] Do You Know Your ABCs? S 7 / 25 7
7044 lg7557   [USACO21OPEN] Acowdemia S 11 / 115 9
9027 lg7667   [JOI 2018 Final] 美术展览 11 / 54 7
10891 lg7795   [COCI 2014/2015 #7] PROSJEK 8 / 26 7
10887 lg7861   [COCI 2015/2016 #2] SAVEZ 9 / 111 9
2017 lg7910   【模拟】[CSP-J 2021] 插入排序 14 / 49 6
2018 lg7911   [CSP-J 2021] 网络连接 7 / 83 9
2012 lg7960   [NOIP2021] 报数 44 / 330 8
6999 lg7992   [USACO21DEC] Convoluted Intervals S 17 / 61 6
6995 lg7994   [USACO21DEC] Air Cownditioning B 5 / 10 9
6996 lg7995   [USACO21DEC] Walking Home B 5 / 10 9
7002 lg8092   [USACO22JAN] Drought B 6 / 8 9
7005 lg8094   [USACO22JAN] Cow Frisbee S 6 / 13 8
9046 lg8161    [JOI 2022 Final] 自学 / Self Study 1 / 1 10
7007 lg8183   [USACO22FEB] Sleeping in Class B 5 / 11 9
7032 lg8268   [USACO22OPEN] Alchemy B 4 / 4 10
1981 lg8816   【DP状态设计】[CSP-J 2022] 上升点列 12 / 51 7
6971 lg8898   [USACO22DEC] Feeding the Cows B 5 / 8 10
6972 lg8899   [USACO22DEC] Reverse Engineering B 5 / 13 9
6980 lg9014   [USACO23JAN] Following Directions S 4 / 8 10
6981 lg9015   [USACO23JAN] Moo Route S 5 / 11 9
6986 lg9125   [USACO23FEB] Cow-libi S 6 / 33 8
7104 lg9738   [COCI 2022/2023 #2] Prijateljice 11 / 29 6
1972 lg9750   【模拟(难度:8)】[CSP-J 2023] 一元二次方程 18 / 61 6
10281 lg9766   [ROIR 2021] 好数 (Day 2) 2 / 5 10
10269 lg9784   [ROIR 2020] 超速 (Day1) 0 / 0 (无)
7047 lg9939   [USACO21OPEN] Acowdemia III B 9 / 29 7
6902 lg9948   [USACO20JAN] Race B 10 / 24 6
6890 lg9951   [USACO20FEB] Swapity Swap B 15 / 45 6
6876 lg9952   [USACO20OPEN] Social Distancing I B 2 / 2 10
6878 lg9954   [USACO20OPEN] Cowntact Tracing B 6 / 14 8
7083 lg9957   [USACO20DEC] Stuck in a Rut B 2 / 2 10
7526 lg9974   [USACO23DEC] Candy Cane Feast B*【模拟】 12 / 43 7
7527 lg9975   [USACO23DEC] Cowntact Tracing 2 B 8 / 42 8
7445 lg9976   [USACO23DEC] Farmer John Actually Farms B 6 / 25 8
7447 lg9978   [USACO23DEC] Cycle Correspondence S 21 / 63 6
10292 lg10086   [ROIR 2022] 口算比赛 (Day 1) 1 / 1 10
10299 lg10095   [ROIR 2023] 斐波那契乘积 (Day 1) 1 / 1 10
6788 lg10123   [USACO18OPEN] Milking Order B 7 / 540 10
6789 lg10124   [USACO18OPEN] Family Tree B 5 / 20 8
7504 lg10133   [USACO24JAN] Balancing Bacteria B【思维】 11 / 68 8
7514 lg10135   [USACO24JAN] Potion Farming S 19 / 64 6
9055 lg10205   [JOI 2024 Final] 室温 / Room Temperature 1 / 1 10
7487 lg10225   [COCI 2023/2024 #3] Milano C.le 13 / 25 5
7634 lg10275   *【模拟】多边形周长上两点距离[USACO24OPEN] Walking Along a Fence B 13 / 62 7
7635 lg10276   *【思维细节】还原序列[USACO24OPEN] Farmer John's Favorite Permutation B 14 / 38 6
1126 lg10450   *【二分】平均值最大(长度≥L)[USACO03MAR] Best Cow Fences G 76 / 419 8
1213 lg10460   *【二分|位运算】找有奇数个小球的位置[防线] 31 / 63 4
1266 lg10464   【STL:multiset】任务 50 / 181 6
7335 lg11104   [ROI 2023] 监控 (Day 1) 1 / 1 10
7338 lg11108   [ROI 2023] 蜗牛与富士山 (Day 2) 1 / 1 10
7578 lg11116    [ROI 2024] 割草 (Day 2) 1 / 1 10
10307 lg11124   [ROIR 2024] 数组划分 (Day 2) 1 / 1 10
2552 lg11229   【分类模拟】[CSP-J 2024] 小木棍 28 / 193 8
12537 lg11389   [COCI 2024/2025 #1] 等级 / Hijerarhija 13 / 23 5
12551 lg11430   [COCI 2024/2025 #2] 游戏 / Igre 15 / 90 8
6903 lg11449   *【模拟】链式舍入[USACO24DEC] Roundabount Rounding B 25 / 139 8
6905 lg11451   *【模拟】哞哞叫[USACO24DEC] It's Mooin' Time B 9 / 22 7
6906 lg11452   [USACO24DEC] Cake Game S 22 / 78 6
12546 lg11475   [COCI 2024/2025 #3] 红蓝牌 / Karte 15 / 64 7
12561 lg11650   [COCI 2024/2025 #4] 力 / Benzinska 19 / 33 3
9060 lg11662   [JOI 2025 Final] 方格染色 / Grid Coloring 12 / 87 8
6916 lg11668   *【思维】哞哞叫Ⅱ [USACO25JAN] It's Mooin' Time II B 15 / 58 7
6917 lg11669   *【模拟】序列翻转匹配[USACO25JAN] Cow Checkups B 9 / 23 7
9565 lg11701   [ROIR 2025] 平方差 1 / 1 10
12565 lg11752   [COCI 2024/2025 #5] 挂画 / Zid 16 / 116 8
9031 lg11788    [JOI 2019 Final] 勇者比太郎 / Bitaro the Brave 1 / 1 10
9016 lg11793    [JOI 2016 Final] 橙子装箱 1 / 4 10
9017 lg11794   [JOI 2016 Final] 集邮比赛 2 1 / 2 10
2584 lg11841   *【思维+类gcd】ab变成cd的最少步数[USACO25FEB] Transforming Pairs S 34 / 158 7
469 lg13976   数列分块入门 1 23 / 103 7
472 lg13979   数列分块入门 4 19 / 67 6
9607 lg14000   [eJOI 2025]网格 2 / 28 9
1354 lg14359   [CSP-J 2025] 异或和 29 / 197 8
1355 lg14360   [CSP-J 2025] 多边形 31 / 191 8
1356 lg14361   [CSP-S 2025] 社团招新 21 / 84 7
8448 lg14406   [JOISC 2015] 愉快的标志设计 / En-JOI-able Logo Design 1 / 1 10
4675 lg14421   [JOISC 2014] 拉面比较 / Ramen 2 / 3 10
8991 lg14433   [JOISC 2013] JOI 海报 / JOI Poster 1 / 1 10
12620 lg14595   [COCI 2025/2026 #2] 集训 / Dodatna 1 / 1 10
1915 lg14635   [NOIP2025] 糖果店 2 / 11 10
12628 lg14781   [COCI 2025/2026 #3] 尺子 / Ravnalo 15 / 57 7
2261 lg14974   [USACO26JAN1] Chip Exchange B 12 / 31 6
2263 lg14976   [USACO26JAN1] Photoshoot B 12 / 27 6
9650 lg15131   [ROIR 2026] 长方体的染色 1 / 2 10

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