ID Problem Show tags Hide tags AC / Tried Difficulty
67 P1067  [NOIP2009 普及组] 多项式输出 2 / 2 2
68 P1068  [NOIP2009 普及组] 分数线划定 1 / 1 2
69 P1069  [NOIP2009 普及组] 细胞分裂 0 / 0 4
70 P1070  [NOIP2009 普及组] 道路游戏 1 / 1 5
71 P1071  [NOIP2009 提高组] 潜伏者 1 / 1 2
72 P1072  [NOIP2009 提高组] Hankson 的趣味题 5 / 6 4
73 P1073  [NOIP2009 提高组] 最优贸易 5 / 7 5
74 P1074  [NOIP2009 提高组] 靶形数独 2 / 2 5
336 P1339  [USACO09OCT] Heat Wave G 3 / 3 3
599 P1607  [USACO09FEB] Fair Shuttle G 0 / 0 5
619 P1627  [CQOI2009] 中位数 0 / 0 4
720 P1756  [NOI2009] 描边 0 / 0 7
722 P1758  [NOI2009] 管道取珠 1 / 1 5
821 P1864  [NOI2009] 二叉查找树 0 / 0 6
868 P1912  [NOI2009] 诗人小G 0 / 0 6
891 P1938  [USACO09NOV] Job Hunt S 0 / 0 3
914 P1963  [NOI2009] 变换序列 1 / 1 6
923 P1972  [SDOI2009] HH的项链 0 / 2 5
966 P2017  [USACO09DEC] Dizzy Cows G 0 / 0 4
971 P2023  [AHOI2009] 维护序列 3 / 10 4
986 P2039  [AHOI2009] 跳棋 0 / 0 4
998 P2051  [AHOI2009] 中国象棋 0 / 0 5
1002 P2055  [ZJOI2009] 假期的宿舍 3 / 5 5
1130 P2148  [SDOI2009] E&D 0 / 0 5
1131 P2149  [SDOI2009] Elaxia的路线 0 / 0 5
1133 P2151  [SDOI2009] HH去散步 0 / 0 6
1134 P2152  [SDOI2009] SuperGCD 0 / 0 5
1135 P2153  [SDOI2009] 晨跑 0 / 0 6
1136 P2154  [SDOI2009] 虔诚的墓主人 0 / 0 6
1138 P2156  [SDOI2009] 细胞探索 0 / 0 6
1139 P2157  [SDOI2009] 学校食堂 0 / 0 6
1141 P2159  [SHOI2009] 舞会 0 / 0 6
1143 P2161  [SHOI2009] 会场预约 0 / 0 5
1044 P2165  [AHOI2009] 飞行棋 0 / 0 3
1150 P2167  [SDOI2009] Bill的挑战 0 / 0 5
1362 P2376  [USACO09OCT] Allowance G 0 / 0 4
1478 P2407  [SDOI2009] 地图复原 0 / 0 5
1477 P2410  [SDOI2009] 最优图像 0 / 0 6
1532 P2513  [HAOI2009] 逆序对数列 0 / 0 3
1584 P2564  [SCOI2009] 生日礼物 0 / 0 4
1585 P2565  [SCOI2009] 骰子的学问 0 / 0 7
1586 P2566  [SCOI2009] 围豆豆 0 / 0 6
1608 P2591  [ZJOI2009] 函数 0 / 0 5
1611 P2594  [ZJOI2009] 染色游戏 0 / 0 6
1612 P2595  [ZJOI2009] 多米诺骨牌 0 / 0 7
1615 P2598  [ZJOI2009] 狼和羊的故事 0 / 0 5
1616 P2599  [ZJOI2009] 取石子游戏 0 / 0 6
1618 P2601  [ZJOI2009] 对称的正方形 0 / 0 6
1663 P2639  [USACO09OCT] Bessie's Weight Problem G 6 / 26 2
1674 P2657  [SCOI2009] windy 数 1 / 1 5
1858 P2805  [NOI2009] 植物大战僵尸 0 / 0 6
1975 P2928  [USACO09HOL] Cattle Bruisers G 0 / 0 6
1976 P2929  [USACO09HOL] Transmission Delay G 0 / 0 5
1977 P2930  [USACO09HOL] Holiday Painting G 0 / 0 6
8564 P2931  [USACO09HOL] Pearl Bracelet G【征集 SPJ】 0 / 0 (None)
1978 P2932  [USACO09JAN] Earthquake Damage G 0 / 0 3
1979 P2933  [USACO09JAN] The Baric Bovine G 0 / 0 5
1980 P2934  [USACO09JAN] Safe Travel G 0 / 0 6
1981 P2935  [USACO09JAN] Best Spot S 0 / 0 3
1982 P2936  [USACO09JAN] Total Flow S 0 / 0 5
1983 P2937  [USACO09JAN] Laserphones S 0 / 0 4
1984 P2938  [USACO09FEB] Stock Market G 0 / 0 4
1985 P2939  [USACO09FEB] Revamping Trails G 4 / 6 4
1986 P2940  [USACO09FEB] The Leprechaun S 0 / 0 5
1987 P2941  [USACO09FEB] Surround the Islands S 0 / 0 5
1988 P2942  [USACO09MAR] Moon Mooing G 0 / 0 3
1989 P2943  [USACO09MAR] Cleaning Up G 0 / 0 5
1990 P2944  [USACO09MAR] Earthquake Damage 2 G 0 / 0 6
1991 P2945  [USACO09MAR] Sand Castle S 0 / 0 2
1992 P2946  [USACO09MAR] Cow Frisbee Team S 0 / 3 3
1993 P2947  [USACO09MAR] Look Up S 17 / 51 3
1994 P2948  [USACO09OPEN] Ski Lessons G 0 / 0 5
1995 P2949  [USACO09OPEN] Work Scheduling G 1 / 1 4
1996 P2950  [USACO09OPEN] Bovine Embroidery G 0 / 0 5
1997 P2951  [USACO09OPEN] Hide and Seek S 0 / 0 3
1998 P2952  [USACO09OPEN] Cow Line S 0 / 0 2
1999 P2953  [USACO09OPEN] Cow Digit Game S 0 / 0 4
2000 P2954  [USACO09OPEN] Grazing2 S 0 / 0 4
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 2
2004 P2958  [USACO09OCT] Papaya Jungle G 0 / 0 2
2005 P2959  [USACO09OCT] The Leisurely Stroll G 0 / 0 2
2006 P2960  [USACO09OCT] Invasion of the Milkweed G 0 / 0 3
2007 P2961  [USACO09NOV] Who Brings the Cookies? G 0 / 0 6
2008 P2962  [USACO09NOV] Lights G 0 / 0 5
2009 P2963  [USACO09NOV] Cow Rescue G 0 / 0 4
2010 P2964  [USACO09NOV] A Coin Game S 0 / 0 5
2011 P2965  [USACO09NOV] The Grand Farm-off S 0 / 0 2
2012 P2966  [USACO09DEC] Cow Toll Paths G 0 / 0 5
2013 P2967  [USACO09DEC] Video Game Troubles G 0 / 0 5
2014 P2968  [USACO09DEC] Bobsledding S 0 / 0 4
2015 P2969  [USACO09DEC] Music Notes S 4 / 20 2
2016 P2970  [USACO09DEC] Selfish Grazing S 0 / 0 3
2208 P3153  [CQOI2009] 跳舞 0 / 0 6
2209 P3154  [CQOI2009] 循环赛 0 / 0 5
2210 P3155  [CQOI2009] 叶子的染色 0 / 0 5
2227 P3173  [HAOI2009] 巧克力 0 / 0 3
2228 P3174  [HAOI2009] 毛毛虫 0 / 0 4
2253 P3199  [HNOI2009] 最小圈 1 / 1 6

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