| 4625 | [BeiJing2016]水晶省选 | 0 |
| 4626 | [BeiJing2016]空袭省选 | 0 |
| 4907 | [BeiJing2017]同构省选 | 0 |
| 4906 | [BeiJing2017]喷式水战改省选 | 0 |
| 4908 | [BeiJing2017]开车省选 | 0 |
| 4859 | [BeiJing2017]机动训练省选 | 0 |
| 4860 | [BeiJing2017]树的难题省选 | 0 |
| 4861 | [Beijing2017]魔法咒语省选 | 0 |
| 1274 | [BeiJingWc2008]Equation省选 | 0 |
| 1272 | [BeiJingWc2008]Gate Of Babylon省选 | 0 |
| 1273 | [BeiJingWc2008]序列省选 | 0 |
| 1271 | [BeiJingWc2008]秦腾与教学评估省选 | 0 |
| 1270 | [BeijingWc2008]雷涛的小猫省选 | 1 |
| 3642 | [CEOI 2014] Cake省选 | 0 |
| 2881 | [Ceoi2000] LandsScape省选 | 0 |
| 3027 | [Ceoi2004]Sweet省选 | 0 |
| 1946 | [Ceoi2006]ANTENNA省选 | 0 |
| 1948 | [Ceoi2006]Connect省选 | 0 |
| 1950 | [Ceoi2006]Link省选 | 0 |
| 1947 | [Ceoi2006]Queue省选 | 0 |
| 1949 | [Ceoi2006]Walk省选 | 0 |
| 1944 | [Ceoi2007]Airport省选 | 0 |
| 1942 | [Ceoi2007]Ministry省选 | 0 |
| 1943 | [Ceoi2007]Nasty Calculations
省选 | 0 |
| 1945 | [Ceoi2007]Royaltreasury省选 | 0 |
| 1767 | [Ceoi2009]harbingers省选 | 0 |
| 1768 | [Ceoi2009]logs省选 | 0 |
| 1766 | [Ceoi2009]photo省选 | 0 |
| 1769 | [Ceoi2009]tri省选 | 0 |
| 2013 | [Ceoi2010]A huge tower省选 | 0 |
| 2010 | [Ceoi2010]bodyguard省选 | 0 |
| 2011 | [Ceoi2010]Mp3 Player省选 | 0 |
| 2012 | [Ceoi2010]Pin省选 | 0 |
| 2383 | [Ceoi2011]ballons省选 | 0 |
| 2385 | [Ceoi2011]Hotel省选 | 0 |
| 2384 | [Ceoi2011]Match省选 | 0 |
| 2386 | [Ceoi2011]Team省选 | 0 |
| 2387 | [Ceoi2011]Traffic省选 | 0 |
| 2857 | [Ceoi2012]jobs省选 | 0 |
| 2858 | [Ceoi2012]network省选 | 0 |
| 2856 | [ceoi2012]Printed Circuit Board省选 | 0 |
| 2859 | [Ceoi2012]Sailing Race省选 | 0 |
| 2860 | [Ceoi2012]wagons省选 | 0 |
| 4492 | [Ceoi2014]007省选 | 0 |
| 4798 | [Ceoi2015]Calvinball championship省选 | 0 |
| 4800 | [Ceoi2015]Ice Hockey World Championship省选 | 0 |
| 4799 | [Ceoi2015]Pipes省选 | 0 |
| 4797 | [Ceoi2015]Potemkin cycle省选 | 0 |
| 4934 | [Ceoi2016]kangaroo省选 | 0 |
| 4936 | [Ceoi2016]match省选 | 0 |
