| #1203 | Copy and Paste 2JOISC 2015 Day 1 | |
| #1204 | En-JOI-able Logo DesignJOISC 2015 Day 1 | |
| #1205 | Growing Vegetables is Fun 2JOISC 2015 Day 1 | |
| #1206 | IOIOI CardsJOISC 2015 Day 1 | |
| #1207 | Building 3JOISC 2015 Day 2 | |
| #1208 | KeysJOISC 2015 Day 2 | |
| #1209 | Road DevelopmentJOISC 2015 Day 2 | |
| #1210 | AAQQZJOISC 2015 Day 3 | |
| #1211 | Card Game Is Great FunJOISC 2015 Day 3 | |
| #1212 | NavigationJOISC 2015 Day 3Communication | |
| #1213 | InheritanceJOISC 2015 Day 4 | |
| #1214 | Limited MemoryJOISC 2015 Day 4Interactive | |
| #1215 | WallsJOISC 2015 Day 4 | |
| #1217 | 归程NOI 2018 Day 1 | |
| #1218 | 冒泡排序NOI 2018 Day 1 | |
| #1219 | 你的名字NOI 2018 Day 1 | |
| #1220 | 屠龙勇士NOI 2018 Day 2 | |
| #1221 | 情报中心NOI 2018 Day 2 | |
| #1222 | 多边形NOI 2018 Day 2 | |
| #1223 | 回家路线NOI 2019 | |
| #1224 | 机器人NOI 2019 | |
| #1225 | 序列NOI 2019 | |
| #1226 | 弹跳NOI 2019 | |
| #1227 | 斗主地NOI 2019 | |
| #1228 | I 君的探险NOI 2019Interactive | |
| #1241 | RaidPetrozavodsk Summer 2020 Day 1 | |
| #1242 | Broken linePetrozavodsk Summer 2020 Day 1 | |
| #1243 | TerritoriesPetrozavodsk Summer 2020 Day 1 | |
| #1244 | TeaPetrozavodsk Summer 2020 Day 1 | |
| #1245 | Three ballsPetrozavodsk Summer 2020 Day 1 | |
| #1246 | Family photoPetrozavodsk Summer 2020 Day 1 | |
| #1247 | Pop musicPetrozavodsk Summer 2020 Day 1 | |
| #1248 | IslandPetrozavodsk Summer 2020 Day 1 | |
| #1249 | Goldfish and pikesPetrozavodsk Summer 2020 Day 1 | |
| #1250 | TokensPetrozavodsk Summer 2020 Day 1 | |
| #1251 | Even rainPetrozavodsk Summer 2020 Day 1 | |
| #1252 | Floyd-WarshallPetrozavodsk Summer 2020 Day 1 | |
| #1253 | Abstract Circular CoverPetrozavodsk Summer 2020 Day 2 | |
| #1254 | Biggest Set EverPetrozavodsk Summer 2020 Day 2 | |
| #1255 | Convex Sets On GraphPetrozavodsk Summer 2020 Day 2 | |
| #1256 | Delete Two Vertices AgainPetrozavodsk Summer 2020 Day 2 | |
| #1257 | Easy OnePetrozavodsk Summer 2020 Day 2 | |
| #1258 | FootballPetrozavodsk Summer 2020 Day 2 | |
| #1259 | Game On BoardPetrozavodsk Summer 2020 Day 2 | |
| #1260 | Hardcore String Counting 2Petrozavodsk Summer 2020 Day 2 | |
| #1261 | InvPetrozavodsk Summer 2020 Day 2 | |
| #1262 | Justice For EveryonePetrozavodsk Summer 2020 Day 2 | |
| #1263 | Keep It CoolPetrozavodsk Summer 2020 Day 2 | |
| #1264 | Lower AlgorithmicsPetrozavodsk Summer 2020 Day 2 | |
| #1265 | Total EclipsePetrozavodsk Summer 2020 Day 3 | |
| #1266 | Visual CubePetrozavodsk Summer 2020 Day 3 | |
| #1267 | Count on a Tree II Striking BackPetrozavodsk Summer 2020 Day 3 | |
| #1268 | Diamond RushPetrozavodsk Summer 2020 Day 3 | |
| #1269 | New EquipmentsPetrozavodsk Summer 2020 Day 3 | |
| #1270 | The Missing PetPetrozavodsk Summer 2020 Day 3 | |
| #1271 | In Search of GoldPetrozavodsk Summer 2020 Day 3 | |
| #1272 | Dynamic Convex HullPetrozavodsk Summer 2020 Day 3 | |
| #1273 | It's All SquaresPetrozavodsk Summer 2020 Day 3 | |
| #1274 | Walking PlanPetrozavodsk Summer 2020 Day 3 | |
| #1275 | King of Hot PotPetrozavodsk Summer 2020 Day 3 | |
| #1276 | String DistancePetrozavodsk Summer 2020 Day 3 | |
| #1277 | PermutationPetrozavodsk Summer 2020 Day 4 | |
| #1278 | Tree ProductPetrozavodsk Summer 2020 Day 4 | |
| #1279 | Distinct NumberPetrozavodsk Summer 2020 Day 4 | |
| #1280 | Fibonacci PartitionPetrozavodsk Summer 2020 Day 4 | |
| #1281 | Longest Common SubsequencePetrozavodsk Summer 2020 Day 4 | |
| #1282 | NecklacePetrozavodsk Summer 2020 Day 4 | |
| #1283 | Paper-cuttingPetrozavodsk Summer 2020 Day 4Shaanxi Provincial 2019 | |
| #1284 | Partition NumberPetrozavodsk Summer 2020 Day 4 | |
| #1285 | Stirling NumberPetrozavodsk Summer 2020 Day 4 | |
| #1286 | Ternary String CountingPetrozavodsk Summer 2020 Day 4 | |
| #1287 | Anti-hash TestPetrozavodsk Summer 2020 Day 4 | |
| #1288 | Tokens on the TreePetrozavodsk Summer 2020 Day 4 | |
| #1289 | A + B ProblemPetrozavodsk Summer 2020 Day 4 | |
| #1290 | Access PointsNWERC 2018 | |
| #1291 | Brexit NegotiationsNWERC 2018 | |
| #1292 | Circuit Board DesignNWERC 2018 | |
| #1293 | Date PickupNWERC 2018 | |
| #1294 | Equality ControlNWERC 2018 | |
| #1295 | Fastest SpeedrunNWERC 2018 | |
| #1296 | Game DesignNWERC 2018 | |
| #1297 | Hard DriveNWERC 2018 | |
| #1298 | InflationNWERC 2018 | |
| #1299 | Jinxed BettingNWERC 2018 | |
| #1300 | KleptographyNWERC 2018 | |