| #3101 | Event Hopping 2JOISC 2021 Day 4 | |
| #3102 | Navigation 2JOISC 2021 Day 4Communication | |
| #3103 | Worst Reporter 4JOISC 2021 Day 4 | |
| #3104 | Assigning WorkstationsNWERC 2015 | |
| #3105 | Better ProductivityNWERC 2015 | |
| #3106 | Cleaning PipesNWERC 2015 | |
| #3107 | DebuggingNWERC 2015 | |
| #3108 | Elementary MathNWERC 2015 | |
| #3109 | Flight Plan EvaluationNWERC 2015 | |
| #3110 | Guessing CamelsNWERC 2015 | |
| #3111 | Hole in OneNWERC 2015 | |
| #3112 | Identifying Map TilesNWERC 2015 | |
| #3113 | Jumbled CommunicationNWERC 2015 | |
| #3114 | Kitchen CombinatoricsNWERC 2015 | |
| #3115 | Another lotteryUniversity of Ulm Local Contest 2009 | |
| #3116 | Ballot evaluationUniversity of Ulm Local Contest 2009 | |
| #3117 | Cyclic antimonotonic permutationsUniversity of Ulm Local Contest 2009 | |
| #3118 | Dark roadsUniversity of Ulm Local Contest 2009 | |
| #3119 | Elias gamma codingUniversity of Ulm Local Contest 2009 | |
| #3120 | Food portion sizesUniversity of Ulm Local Contest 2009 | |
| #3121 | Generate random numbersUniversity of Ulm Local Contest 2009 | |
| #3122 | Hotel bookingUniversity of Ulm Local Contest 2009 | |
| #3123 | StoveJOI 2017/2018 | |
| #3124 | Art ExhibitionJOI 2017/2018 | |
| #3125 | Dango MakerJOI 2017/2018 | |
| #3126 | Commuter PassJOI 2017/2018 | |
| #3127 | Snake EscapingJOI 2017/2018 | |
| #3128 | Rush Hour PuzzleTaipei-Hsinchu Regional 2019 | |
| #3129 | The Power Monitor SystemTaipei-Hsinchu Regional 2019 | |
| #3130 | Are They All Integers?Taipei-Hsinchu Regional 2019 | |
| #3131 | TapiokaTaipei-Hsinchu Regional 2019 | |
| #3132 | The League of Sequence DesignersTaipei-Hsinchu Regional 2019 | |
| #3133 | Miss SloaneTaipei-Hsinchu Regional 2019 | |
| #3134 | Optimal SelectionTaipei-Hsinchu Regional 2019 | |
| #3135 | Mining aTaipei-Hsinchu Regional 2019 | |
| #3136 | The SpectrumTaipei-Hsinchu Regional 2019 | |
| #3137 | Automatic Control MachineTaipei-Hsinchu Regional 2019 | |
| #3138 | Length of Bundle RopeTaipei-Hsinchu Regional 2019 | |
| #3139 | Largest QuadrilateralTaipei-Hsinchu Regional 2019 | |
| #3140 | DivModuloTaipei-Hsinchu Regional 2019 | |
| #3141 | Foehn PhenomenaJOI 2016/2017 | |
| #3142 | SemiexpressJOI 2016/2017 | |
| #3143 | The Kingdom of JOIOIJOI 2016/2017 | |
| #3144 | SoccerJOI 2016/2017 | |
| #3145 | RopeJOI 2016/2017 | |
| #3146 | OrangesJOI 2015/2016 | |
| #3147 | Collecting Stamps 2JOI 2015/2016 | |
| #3148 | Train FareJOI 2015/2016 | |
| #3149 | TerritoryJOI 2015/2016 | |
| #3150 | Geologic FaultJOI 2015/2016 | |
| #3151 | Railroad TripJOI 2014/2015 | |
| #3152 | Cake 2JOI 2014/2015 | |
| #3153 | JOI ParkJOI 2014/2015 | |
| #3154 | BallJOI 2014/2015 | |
| #3155 | RampartJOI 2014/2015 | |
| #3156 | JOI EmblemJOI 2013/2014 | |
| #3157 | IOI ManjuJOI 2013/2014 | |
| #3158 | BaumkuchenJOI 2013/2014 | |
| #3159 | Sugar GliderJOI 2013/2014 | |
| #3160 | CuttingJOI 2013/2014 | |
| #3161 | Another Coin Weighing PuzzleNAC 2020 | |
| #3162 | Mini BattleshipNAC 2020 | |
| #3163 | BomasNAC 2020 | |
| #3164 | All KillNAC 2020 | |
| #3165 | Grid GuardianNAC 2020 | |
| #3166 | HopscotchNAC 2020 | |
| #3167 | ICPC CampNAC 2020 | |
| #3168 | Letter WheelsNAC 2020 | |
| #3169 | Editing ExplosionNAC 2020 | |
| #3170 | Lunchtime Name RecallNAC 2020 | |
| #3171 | Rooted SubtreesNAC 2020 | |
| #3172 | Tomb RaiderNAC 2020 | |
| #3173 | Cakey McCakeFaceSWERC 2017 | |
| #3174 | TableSWERC 2017 | |
| #3175 | MacaronsSWERC 2017 | |
| #3176 | Candy ChainSWERC 2017 | |
| #3177 | IngredientsSWERC 2017 | |
| #3178 | Shattered CakeSWERC 2017 | |
| #3179 | Cordon BleuSWERC 2017 | |
| #3180 | KabobsSWERC 2017 | |
| #3181 | BurglarySWERC 2017 | |
| #3182 | Frosting on the CakeSWERC 2017 | |
| #3183 | Blowing CandlesSWERC 2017 | |
| #3184 | Around the TrackNWERC 2014 | |
| #3185 | Biking DuckNWERC 2014 | |
| #3186 | Cent SavingsNWERC 2014 | |
| #3187 | Digi Comp IINWERC 2014 | |
| #3188 | Euclidean TSPNWERC 2014 | |
| #3189 | Finding LinesNWERC 2014 | |
| #3190 | GatheringNWERC 2014 | |
| #3191 | HyacinthNWERC 2014 | |
| #3192 | IndoorienteeringNWERC 2014 | |
| #3193 | Judging TroublesNWERC 2014 | |
| #3194 | Knapsack CollectionNWERC 2014 | |
| #3195 | Within Arm's ReachSWERC 2016 | |
| #3196 | Bribing EveSWERC 2016 | |
| #3197 | Candle BoxSWERC 2016 | |
| #3198 | Dinner BetSWERC 2016 | |
| #3199 | PasswordsSWERC 2016 | |
| #3200 | Performance ReviewSWERC 2016 | |