ID Problem Show tags Hide tags AC / Tried Difficulty
67 P1067   [NOIP 2009 普及组] 多项式输出 3 / 5 3
68 P1068   [NOIP 2009 普及组] 分数线划定 1 / 1 3
69 P1069   [NOIP 2009 普及组] 细胞分裂 0 / 0 6
70 P1070   [NOIP 2009 普及组] 道路游戏 1 / 1 7
71 P1071   [NOIP 2009 提高组] 潜伏者 1 / 1 3
72 P1072   [NOIP 2009 提高组] Hankson 的趣味题 5 / 6 6
73 P1073   [NOIP 2009 提高组] 最优贸易 5 / 8 7
74 P1074   [NOIP 2009 提高组] 靶形数独 2 / 2 7
336 P1339   [USACO09OCT] Heat Wave G 3 / 3 5
599 P1607   [USACO09FEB] Fair Shuttle G 0 / 0 7
619 P1627   [CQOI2009] 中位数 0 / 0 6
720 P1756   [NOI2009] 描边 0 / 0 9
722 P1758   [NOI2009] 管道取珠 1 / 1 7
821 P1864   [NOI2009] 二叉查找树 0 / 0 8
868 P1912   [NOI2009] 诗人小G 0 / 0 8
891 P1938   [USACO09NOV] Job Hunt S 0 / 0 5
914 P1963   [NOI2009] 变换序列 1 / 1 8
923 P1972   [SDOI2009] HH 的项链 0 / 2 7
966 P2017   [USACO09DEC] Dizzy Cows G 0 / 0 6
971 P2023   [AHOI2009] 维护序列 3 / 10 6
986 P2039   [AHOI2009] 跳棋 0 / 0 6
998 P2051   [AHOI2009] 中国象棋 0 / 0 7
1002 P2055   [ZJOI2009] 假期的宿舍 4 / 13 7
1130 P2148   [SDOI2009] E&D 0 / 0 7
1131 P2149   [SDOI2009] Elaxia的路线 0 / 0 7
1133 P2151   [SDOI2009] HH 去散步 0 / 0 8
1134 P2152   [SDOI2009] SuperGCD 0 / 0 7
1135 P2153   [SDOI2009] 晨跑 0 / 0 8
1136 P2154   [SDOI2009] 虔诚的墓主人 0 / 0 8
1138 P2156   [SDOI2009] 细胞探索 0 / 0 8
1139 P2157   [SDOI2009] 学校食堂 0 / 0 8
1141 P2159   [SHOI2009] 舞会 0 / 0 8
1143 P2161   [SHOI2009] 会场预约 0 / 0 7
1044 P2165   [AHOI2009] 飞行棋 0 / 0 5
1150 P2167   [SDOI2009] Bill的挑战 0 / 0 7
1362 P2376   [USACO09OCT] Allowance G 0 / 0 6
1478 P2407   [SDOI2009] 地图复原 0 / 0 7
1477 P2410   [SDOI2009] 最优图像 0 / 0 8
1532 P2513   [HAOI2009] 逆序对数列 0 / 0 5
1584 P2564   [SCOI2009] 生日礼物 0 / 0 6
1585 P2565   [SCOI2009] 骰子的学问 0 / 0 9
1586 P2566   [SCOI2009] 围豆豆 0 / 0 8
1608 P2591   [ZJOI2009] 函数 0 / 0 7
1611 P2594   [ZJOI2009] 染色游戏 0 / 0 8
1612 P2595   [ZJOI2009] 多米诺骨牌 0 / 0 9
1615 P2598   [ZJOI2009] 狼和羊的故事 0 / 0 7
1616 P2599   [ZJOI2009] 取石子游戏 0 / 0 9
1618 P2601   [ZJOI2009] 对称的正方形 0 / 0 8
1663 P2639   [USACO09OCT] Bessie's Weight Problem G 9 / 30 3
1674 P2657   [SCOI2009] windy 数 1 / 1 5
1858 P2805   [NOI2009] 植物大战僵尸 0 / 0 8
1975 P2928   [USACO09HOL] Cattle Bruisers G 0 / 0 8
1976 P2929   [USACO09HOL] Transmission Delay G 0 / 0 7
1977 P2930   [USACO09HOL] Holiday Painting G 0 / 0 8
8564 P2931   [USACO09HOL] Pearl Bracelet G【征集 SPJ】 0 / 0 (None)
1978 P2932   [USACO09JAN] Earthquake Damage G 0 / 0 5
1979 P2933   [USACO09JAN] The Baric Bovine G 0 / 0 7
1980 P2934   [USACO09JAN] Safe Travel G 0 / 0 7
1981 P2935   [USACO09JAN] Best Spot S 0 / 0 5
1982 P2936   [USACO09JAN] Total Flow S 0 / 0 7
1983 P2937   [USACO09JAN] Laserphones S 1 / 1 6
1984 P2938   [USACO09FEB] Stock Market G 0 / 0 6
1985 P2939   [USACO09FEB] Revamping Trails G 4 / 6 6
1986 P2940   [USACO09FEB] The Leprechaun S 0 / 0 7
1987 P2941   [USACO09FEB] Surround the Islands S 0 / 0 5
1988 P2942   [USACO09MAR] Moon Mooing G 0 / 0 5
1989 P2943   [USACO09MAR] Cleaning Up G 0 / 0 7
1990 P2944   [USACO09MAR] Earthquake Damage 2 G 0 / 0 8
1991 P2945   [USACO09MAR] Sand Castle S 0 / 0 3
1992 P2946   [USACO09MAR] Cow Frisbee Team S 1 / 7 5
1993 P2947   [USACO09MAR] Look Up S 17 / 51 5
1994 P2948   [USACO09OPEN] Ski Lessons G 0 / 0 7
1995 P2949   [USACO09OPEN] Work Scheduling G 1 / 1 6
1996 P2950   [USACO09OPEN] Bovine Embroidery G 0 / 0 7
1997 P2951   [USACO09OPEN] Hide and Seek S 0 / 0 5
1998 P2952   [USACO09OPEN] Cow Line S 0 / 0 3
1999 P2953   [USACO09OPEN] Cow Digit Game S 0 / 0 6
2000 P2954   [USACO09OPEN] Grazing2 S 0 / 0 6
2001 P2955   [USACO09OCT] Even? Odd? G 0 / 0 1
2002 P2956   [USACO09OCT] The Robot Plow G 0 / 0 1
2003 P2957   [USACO09OCT] Barn Echoes G 0 / 0 3
2004 P2958   [USACO09OCT] Papaya Jungle G 0 / 0 3
2005 P2959   [USACO09OCT] The Leisurely Stroll G 0 / 0 3
2006 P2960   [USACO09OCT] Invasion of the Milkweed G 1 / 5 5
2007 P2961   [USACO09NOV] Who Brings the Cookies? G 0 / 0 8
2008 P2962   [USACO09NOV] Lights G 0 / 0 7
2009 P2963   [USACO09NOV] Cow Rescue G 0 / 0 6
2010 P2964   [USACO09NOV] A Coin Game S 0 / 0 7
2011 P2965   [USACO09NOV] The Grand Farm-off S 0 / 0 3
2012 P2966   [USACO09DEC] Cow Toll Paths G 0 / 0 7
2013 P2967   [USACO09DEC] Video Game Troubles G 0 / 0 7
2014 P2968   [USACO09DEC] Bobsledding S 0 / 0 6
2015 P2969   [USACO09DEC] Music Notes S 4 / 20 3
2016 P2970   [USACO09DEC] Selfish Grazing S 0 / 0 3
2208 P3153   [CQOI2009] 跳舞 0 / 0 8
2209 P3154   [CQOI2009] 循环赛 0 / 0 7
2210 P3155   [CQOI2009] 叶子的染色 0 / 0 6
2227 P3173   [HAOI2009] 巧克力 0 / 0 6
2228 P3174   [HAOI2009] 毛毛虫 0 / 0 6
2253 P3199   [HNOI2009] 最小圈 1 / 1 7

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