• 1
ID Problem Show tags Hide tags AC / Tried Difficulty
5383 P1263   [CEOI 2002] Royal guards 0 / 0 6
5734 P1623   [CEOI 2007] 树的匹配 Treasury 0 / 0 6
8251 P4177   [CEOI 2008] order 0 / 0 6
8435 P4360   [CEOI 2004] 锯木厂选址 0 / 0 6
8737 P4652   [CEOI 2017] One-Way Streets 0 / 0 5
8738 P4653   [CEOI 2017] Sure Bet 0 / 0 4
8739 P4654   [CEOI 2017] Mousetrap 0 / 0 6
8740 P4655   [CEOI 2017] Building Bridges 0 / 0 6
8741 P4656   [CEOI 2017] Palindromic Partitions 0 / 0 4
8742 P4657   [CEOI 2017] Chase 0 / 0 6
8795 P4696   [CEOI 2011] Matching 0 / 0 6
8796 P4697   [CEOI 2011] Balloons 0 / 0 6
8797 P4698   [CEOI 2011] Hotel 0 / 0 6
8798 P4699   [CEOI 2011] Teams 0 / 0 6
8799 P4700   [CEOI 2011] Traffic 0 / 0 6
8933 P4797   [CEOI 2015] 波将金的路径 (Day1) 0 / 0 6
8934 P4798   [CEOI 2015] 卡尔文球锦标赛 (Day1) 0 / 0 4
8935 P4799   [CEOI 2015] 世界冰球锦标赛 (Day2) 0 / 0 4
8936 P4800   [CEOI 2015] 核能国度 (Day2) 0 / 0 6
9620 P5513   [CEOI 2013] Board 0 / 0 6
10171 P5697   [CEOI 2018] toy 0 / 0 3
10051 P5937   [CEOI 1999] Parity Game 0 / 0 4
10119 P5974   [CEOI 2006] ANTENNA 0 / 0 6
10118 P5975   [CEOI 2009] photo 0 / 0 5
10117 P5976   [CEOI 2008] Dominance 0 / 0 4
10116 P5977   [CEOI 2008] Fence 0 / 0 6
10115 P5978   [CEOI 2018] Global warming 0 / 0 4
10113 P5999   [CEOI 2016] kangaroo 0 / 0 6
10114 P6000   [CEOI 2016] match 0 / 0 6
10157 P6078   [CEOI 2004] Sweets 0 / 0 6
10222 P6090   [CEOI 2019] 立方填词 0 / 0 6
10223 P6092   [CEOI 2012] 工作规划 0 / 0 3
10309 P6237   [CEOI 2012] Printed Circuit Board 0 / 0 6
10485 P6359   [CEOI 2018] Cloud computing 0 / 0 4
10486 P6360   [CEOI 2018] Lottery 0 / 0 4
10484 P6361   [CEOI 2018] Fibonacci representations 0 / 0 7
10650 P6517   [CEOI 2010] alliances (day1) 0 / 0 6
10651 P6518   [CEOI 2010] arithmetic (day1) 0 / 0 5
10652 P6519   [CEOI 2010] bodyguards (day1) 0 / 0 6
10653 P6520   [CEOI 2010] mp3player (day2) 0 / 0 6
10654 P6521   [CEOI 2010] pin (day2) 0 / 0 5
10655 P6522   [CEOI 2010] tower (day2) 0 / 0 4
10679 P6543   [CEOI 2014] 007 0 / 0 6
10680 P6544   [CEOI 2014] Cake 0 / 0 6
10681 P6545   [CEOI 2014] The Wall 0 / 0 7
10999 P6801   [CEOI 2020] 花式围栏 0 / 0 4
11008 P6802   [CEOI 2020] 道路 0 / 0 6
11009 P6803   [CEOI 2020] 星际迷航 0 / 0 6
11010 P6804   [CEOI 2020] 权力药水 0 / 0 6
11011 P6805   [CEOI 2020] 春季大扫除 0 / 0 6
11012 P6806   [CEOI 2020] 象棋世界 0 / 0 7
11000 P6844   [CEOI 2019] Building Skyscrapers 0 / 0 7
11004 P6845   [CEOI 2019] Dynamic Diameter 0 / 0 6
11005 P6846   [CEOI 2019] Amusement Park 0 / 0 6
11013 P6847   [CEOI 2019] Magic Tree 0 / 0 6
11017 P6848   [CEOI 2019] Scissors and Tape 0 / 0 7
10992 P6887   [CEOI 2006] Queue 0 / 0 (None)
10995 P6888   [CEOI 2006] Walk 0 / 0 (None)
10993 P6889   [CEOI 2006] CONNECT 0 / 0 (None)
10994 P6890   [CEOI 2006] Link 0 / 0 5
11710 P7543   [CEOI 2011] Treasure Hunt 0 / 0 6
12121 P7684   [CEOI 2005] Depot Rearrangement 0 / 0 6
12125 P7685   [CEOI 2005] Mobile Service 0 / 0 5
12126 P7686   [CEOI 2005] Multi-key Sorting 0 / 0 2
12127 P7687   [CEOI 2005] Critical Network Lines 0 / 0 5
12128 P7688   [CEOI 2005] Ticket Office 0 / 0 5
12129 P7689   [CEOI 2002] Bugs Integrated,Inc. 0 / 0 6
12130 P7690   [CEOI 2002] A decorative fence 0 / 0 4
12138 P7692   [CEOI 2003] The Race 0 / 0 5
12141 P7693   [CEOI 2003] Shift Register 0 / 0 (None)
12392 P8171   [CEOI 2021] Diversity 0 / 0 6
12393 P8172   [CEOI 2021] L-triominoes 0 / 0 6
12398 P8173   [CEOI 2021] Newspapers 0 / 0 7
12403 P8174   [CEOI 2021] Stones 0 / 0 5
12594 P8175   [CEOI 2021] Tortoise 0 / 0 7
12595 P8176   [CEOI 2021] Wells 0 / 0 7
13450 P8996   [CEOI 2022] Abracadabra 0 / 0 6
13451 P8997   [CEOI 2022] Homework 0 / 0 5
13452 P8999   [CEOI 2022] Drawing 0 / 0 7
13453 P9000   [CEOI 2022] Measures 0 / 0 5
13454 P9001   [CEOI 2022] Parking 0 / 0 6
13748 P9269   [CEOI 2013] 新宝岛 / Treasure 0 / 0 4
13736 P9270   [CEOI 2013] 有轨电车 / Tram 0 / 0 6
13737 P9271   [CEOI 2013] 停车场 / Splot 0 / 0 6
13738 P9272   [CEOI 2013] 千岛之国 / Adritic 0 / 0 5
13740 P9273   [CEOI 2013] 灌水 / Watering 0 / 0 3
14318 P9730   [CEOI 2023] Grading Server 0 / 0 7
14323 P9731   [CEOI 2023] Balance 0 / 0 6
14317 P9732   [CEOI 2023] Trade 0 / 0 7
14316 P9733   [CEOI 2023] The Ties That Guide Us (incursion) 0 / 0 6
15485 P10602   [CEOI 2009] Harbingers 0 / 0 6
15678 P10801   [CEOI 2024] 海战 0 / 0 6
15679 P10802   [CEOI 2024] 核酸检测 0 / 0 7
15680 P10803   [CEOI 2024] 文本编辑器 0 / 0 6
15681 P10804   [CEOI 2024] 玩具谜题 0 / 0 4
15682 P10805   [CEOI 2024] 加油站 0 / 0 6
15683 P10806   [CEOI 2024] 洒水器 0 / 0 5
16138 P11360   [CEOI 2015] 管道 0 / 0 6
  • 1

Categories

Lucky

Pick a problem randomly based on the current filter.