| 1753 | [Usaco2005 qua]Who's in the Middle省选 | 0 |
| 1754 | [Usaco2005 qua]Bull Math省选 | 2 |
| 1755 | [Usaco2005 qua]Bank Interest省选 | 0 |
| 1756 | Vijos1083 小白逛公园 省选 | 4 |
| 1757 | Apple 偷苹果省选 | 0 |
| 1758 | [Wc2010]重建计划省选 | 1 |
| 1759 | Let there be rainbows!省选 | 0 |
| 1760 | [Baltic2009]Triangulation省选 | 0 |
| 1761 | [Baltic2009]beetle省选 | 0 |
| 1762 | [Baltic2009]candy省选 | 0 |
| 1763 | [Baltic2009]subway省选 | 0 |
| 1764 | [Baltic2009]monument省选 | 0 |
| 1765 | [Baltic2009]rectangle省选 | 0 |
| 1766 | [Ceoi2009]photo省选 | 0 |
| 1767 | [Ceoi2009]harbingers省选 | 0 |
| 1768 | [Ceoi2009]logs省选 | 0 |
| 1769 | [Ceoi2009]tri省选 | 0 |
| 1770 | [Usaco2009 Nov]lights 燈省选 | 0 |
| 1771 | [Usaco2009 Nov]cookie 誰請客省选 | 0 |
| 1772 | [Usaco2009 Nov]rescue 拯救奶牛貝希省选 | 0 |
| 1773 | [Usaco2009 Dec]Dizzy 头晕的奶牛省选 | 0 |
| 1774 | [Usaco2009 Dec]Toll 过路费省选 | 0 |
| 1775 | [Usaco2009 Dec]Vidgame 电视游戏问题省选 | 0 |
| 1776 | [Usaco2010 Hol]cowpol 奶牛政坛省选 | 0 |
| 1777 | [Usaco2010 Hol]rocks 石头木头省选 | 0 |
| 1778 | [Usaco2010 Hol]Dotp 驱逐猪猡省选 | 0 |
| 1779 | [Usaco2010 Hol]Cowwar 奶牛战争省选 | 0 |
| 1780 | [Usaco2010 Feb]corral 覆盖牛棚省选 | 0 |
| 1781 | [Usaco2010 Feb]Ice 冰上省选 | 0 |
| 1782 | [Usaco2010 Feb]slowdown 慢慢游省选 | 0 |
| 1783 | [Usaco2010 Jan]Taking Turns省选 | 0 |
| 1784 | [Usaco2010 Jan]island省选 | 0 |
| 1785 | [Usaco2010 Jan]telephone省选 | 0 |
| 1786 | [Ahoi2008]Pair 配对省选 | 0 |
| 1787 | [Ahoi2008]Meet 紧急集合省选 | 0 |
| 1788 | [Ahoi2008]Calculator 计算器
省选 | 0 |
| 1789 | [Ahoi2008]Necklace Y型项链
省选 | 1 |
| 1790 | [Ahoi2008]Rectangle 矩形藏宝地
省选 | 0 |
| 1791 | [Ioi2008]Island 岛屿
省选 | 0 |
| 1792 | [Ioi2008]TYPE PRINTER 打印机省选 | 0 |
| 1793 | [Ioi2008]Fish 鱼
省选 | 0 |
| 1794 | [Ioi2008]Linear Garden省选 | 0 |
| 1795 | [Ioi2008]Pyramid Base 金字塔地基
省选 | 0 |
| 1796 | [Ioi2008]Teleporters 传送器省选 | 0 |
| 1797 | [Ahoi2009]Mincut 最小割省选 | 1 |
| 1798 | [Ahoi2009]Seq 维护序列seq省选 | 9 |
| 1799 | [Ahoi2009]self 同类分布省选 | 4 |
| 1878 | [SDOI2009]HH的项链省选 | 6 |
| 1900 | Uva10601 Cubes省选 | 0 |
| 1901 | Zju2112 Dynamic Rankings省选 | 8 |
