Practice
P0887To do叶子合并leavesOfficial CodemaoIntermediateP0888To do[Usaco2007 Oct]Obstacle Course 障碍训练课Official CodemaoElementaryP0889To do[Usaco2006 Oct]Another Cow Number Game 奶牛的数字游戏Official CodemaoBeginner41.2%P0890To do[Usaco2006 Mar]Lights Out 关灯Official CodemaoIntermediateP0891To do[Usaco2006 Nov]Fence Repair 切割木板Official CodemaoElementaryP0892To do[Usaco2007 Jan]Problem Solving 解题Official CodemaoUpper intermediateP0893To do[Usaco2008 Nov]lites 开关灯Official CodemaoIntermediateP0894To do[Usaco2005 Open]Waves 波纹Official CodemaoIntermediateP0895To do[Usaco2006 Mar]Ski Lift 缆车支柱Official CodemaoIntermediateP0896To doMoving the HayOfficial CodemaoUpper intermediateP0897To doZju2116 ChristopherOfficial CodemaoUpper intermediateP0898To doPku3164 Command NetworkOfficial CodemaoUpper intermediateP0899To do[SDOI2009]HH去散步Official CodemaoUpper intermediateP0900To doJZPSTROfficial CodemaoUpper intermediateP0901To do[Ceoi2010]PinOfficial CodemaoUpper intermediateP0902To do[USACO2008 Nov]toy 玩具Official CodemaoUpper intermediateP0903To do[Usaco2009 Nov]农场技艺大赛Official CodemaoElementaryP0904To do[Usaco2010 Jan]Cheese TowersOfficial CodemaoIntermediateP0905To do[Usaco2006 Nov]Round Numbers 圆环数Official CodemaoIntermediateP0906To doPku2422 The Wolves and the SheepOfficial CodemaoUpper intermediateP0907To do[POI2004]ZAWOfficial CodemaoUpper intermediateP0908To doMallOfficial CodemaoUpper intermediateP0909To do[Usaco2010 Dec]The Trough GameOfficial CodemaoBeginnerP0910To do[Poi2010]HamstersOfficial CodemaoUpper intermediateP0911To do[Usaco2012 Open]tiedOfficial CodemaoAdvancedP0912To do[Swerc2010]Fakes coreboardOfficial CodemaoAdvancedP0913To do[Coci2010]HRPAOfficial CodemaoUpper intermediateP0914To doPku3889 Fractal StreetsOfficial CodemaoIntermediateP0915To do[Usaco2007 Open]Cheappal 廉价回文Official CodemaoElementaryP0916To do序列划分Official CodemaoIntermediateP0917To do[Sdoi2008]沙拉公主的困惑Official CodemaoUpper intermediateP0918To do[Sdoi2011]黑白棋Official CodemaoUpper intermediateP0919To dofractionOfficial CodemaoUpper intermediateP0920To do[Zjoi2011]礼物(gift)Official CodemaoUpper intermediateP0921To do[Balkan 2011]TimeismoneyOfficial CodemaoUpper intermediateP0922To do数列Official CodemaoUpper intermediateP0923To do周期点Official CodemaoAdvancedP0924To do[Zjoi2011]看电影(movie)Official CodemaoUpper intermediateP0925To do[中山市选2011]完全平方数Official CodemaoIntermediateP0926To do[HAOI2006]均分数据Official CodemaoAdvancedP0927To doTopCoder MSRM 485 DepositOfficial CodemaoUpper intermediateP0928To do射击游戏Official CodemaoIntermediateP0929To doYummy Triangular PizzaOfficial CodemaoUpper intermediateP0930To do[Usaco2008 Dec]Largest Fence 最大的围栏Official CodemaoUpper intermediateP0931To doPku3900 The RobberyOfficial CodemaoUpper intermediateP0932To doticketsOfficial CodemaoUpper intermediateP0933To doPku3899 The Lucky NumbersOfficial CodemaoUpper intermediateP0934To do[Usaco2008 Mar]土地购买Official CodemaoUpper intermediateP0935To do[Poi2003] Sequences without StammersOfficial CodemaoIntermediateP0936To do[Poi2003]TilesOfficial CodemaoAdvanced