| 2967 | Route省选 | 0 |
| 2968 | 成长计划省选 | 0 |
| 2969 | 矩形粉刷省选 | 0 |
| 2970 | 迷幻森林省选 | 0 |
| 2971 | 魔法森林省选 | 0 |
| 2972 | 排序网络省选 | 0 |
| 2973 | 石头游戏省选 | 0 |
| 2974 | [Poi2002]绝缘体省选 | 0 |
| 2975 | [Poi2002]最大的园地省选 | 0 |
| 2976 | [Poi2002]出圈游戏省选 | 0 |
| 2977 | [Poi2002]滑雪胜地省选 | 0 |
| 2978 | [Poi2002]协议省选 | 0 |
| 2979 | [Poi2002]滑雪者省选 | 0 |
| 2980 | [Poi2002]B-Smooth 数省选 | 0 |
| 2981 | [Poi2002]括号省选 | 0 |
| 2982 | combination省选 | 0 |
| 2983 | [Balkan2009]reading省选 | 0 |
| 2984 | [Balkan2009]strip省选 | 0 |
| 2985 | [Balkan2009]year2012省选 | 0 |
| 2986 | Non-Squarefree Numbers省选 | 0 |
| 2987 | Earthquake省选 | 0 |
| 2988 | DIVISORS省选 | 0 |
| 2990 | [Ontak2010 ]Keyboard 省选 | 0 |
| 2991 | [2012北大校赛]Do Not Gamble省选 | 0 |
| 2992 | Pku3986 Math teacher's homework省选 | 0 |
| 2993 | 尤利西斯的游戏省选 | 0 |
| 2994 | 二叉树省选 | 1 |
| 2995 | 同余方程省选 | 0 |
| 2996 | 数的计数省选 | 0 |
| 2997 | 想法计数省选 | 0 |
| 2998 | 排列数省选 | 0 |
| 2999 | inint省选 | 0 |
| 3000 | Big Number省选 | 0 |
| 3001 | 神秘的水井省选 | 0 |
| 3002 | 修建道路省选 | 0 |
| 3003 | LED省选 | 0 |
| 3004 | 吊灯省选 | 0 |
| 3005 | 体育课省选 | 0 |
| 3006 | 基站建设省选 | 0 |
| 3007 | 拯救小云公主省选 | 0 |
| 3008 | 象棋省选 | 0 |
| 3009 | 集合省选 | 0 |
| 3010 | [Usaco2012 Dec]Gangs of Istanbull省选 | 0 |
| 3011 | [Usaco2012 Dec]Running Away From the Barn 省选 | 0 |
| 3012 | [Usaco2012 Dec]First!省选 | 1 |
| 3013 | [Usaco2012 Nov]Balanced Cow Breeds省选 | 0 |
| 3014 | [Usaco2012 Nov]Balanced Trees省选 | 0 |
| 3015 | [Usaco2012 Nov]Concurrently Balanced Strings省选 | 0 |
| 3016 | [Usaco2012 Nov]Clumsy Cows省选 | 0 |
| 3017 | [Usaco2012 Nov]Cow Breeds省选 | 0 |
