| Flag | ID | Title | Ratio(Solve/Submit) | OJ | VPID |
|---|---|---|---|---|---|
| 265 | Ships | 0.00% (0/3) | PKU | 1138 | |
| 266 | Cat and Mouse | 50.00% (1/2) | PKU | 1139 | |
| 267 | Expanding Fractions | 27.27% (3/11) | PKU | 1140 | |
| 268 | Smith Numbers | 23.08% (3/13) | PKU | 1142 | |
| 269 | Number Game | 0.00% (0/10) | PKU | 1143 | |
| 270 | Network | 14.29% (1/7) | PKU | 1144 | |
| 271 | Tree Summing | 100.00% (1/1) | PKU | 1145 | |
| 272 | ID Codes | 63.16% (12/19) | PKU | 1146 | |
| 273 | Binary codes | 100.00% (1/1) | PKU | 1147 | |
| 274 | PIGS | 14.29% (1/7) | PKU | 1149 | |
| 275 | The Last Non-zero Digit | 33.33% (4/12) | PKU | 1150 | |
| 276 | Atlantis | 20.00% (2/10) | PKU | 1151 | |
| 277 | An Easy Problem! | 50.00% (3/6) | PKU | 1152 | |
| 278 | SAFE | 17.65% (3/17) | PKU | 1153 | |
| 279 | LETTERS | 30.77% (4/13) | PKU | 1154 | |
| 280 | TELE | 21.43% (3/14) | PKU | 1155 | |
| 281 | A STRIP OF LAND | 23.08% (3/13) | PKU | 1156 | |
| 282 | LITTLE SHOP OF FLOWERS | 8.57% (3/35) | PKU | 1157 | |
| 283 | TRAFFIC LIGHTS | 25.00% (2/8) | PKU | 1158 | |
| 284 | Palindrome | 23.08% (3/13) | PKU | 1159 | |
| 285 | Post Office | 23.08% (3/13) | PKU | 1160 | |
| 286 | Walls | 0.00% (0/1) | PKU | 1161 | |
| 287 | Building with Blocks | 0.00% (0/0) | PKU | 1162 | |
| 288 | The Triangle | 38.78% (38/98) | PKU | 1163 | |
| 289 | The Castle | 43.75% (7/16) | PKU | 1164 | |
| 290 | The Primes | 7.69% (1/13) | PKU | 1165 | |
| 291 | The Clocks | 33.33% (4/12) | PKU | 1166 | |
| 292 | The Buses | 20.00% (1/5) | PKU | 1167 | |
| 293 | The Circle | 0.00% (0/7) | PKU | 1168 | |
| 294 | Packing Rectangles | 0.00% (0/8) | PKU | 1169 | |
| 295 | Shopping Offers | 100.00% (1/1) | PKU | 1170 | |
| 296 | Letter Game | 0.00% (0/7) | PKU | 1171 | |
| 297 | Street Race | 0.00% (0/8) | PKU | 1172 | |
| 298 | Bar Codes | 0.00% (0/8) | PKU | 1173 | |
| 299 | Contact | 16.67% (2/12) | PKU | 1174 | |
| 300 | Starry Night | 14.29% (1/7) | PKU | 1175 | |
| 301 | Party Lamps | 20.00% (3/15) | PKU | 1176 | |
| 302 | Picture | 0.00% (0/2) | PKU | 1177 | |
| 303 | Camelot | 20.00% (1/5) | PKU | 1178 | |
| 304 | Polygon | 0.00% (0/3) | PKU | 1179 | |
| 305 | Batch Scheduling | 27.27% (3/11) | PKU | 1180 | |
| 306 | Bus Terminals | 20.00% (2/10) | PKU | 1181 | |
| 307 | 食物链 | 9.68% (3/31) | PKU | 1182 | |
| 308 | 反正切函数的应用 | 0.00% (0/1) | PKU | 1183 | |
| 309 | 聪明的打字员 | 0.00% (0/8) | PKU | 1184 | |
| 310 | 炮兵阵地 | 0.00% (0/7) | PKU | 1185 | |
| 311 | 方程的解数 | 0.00% (0/0) | PKU | 1186 | |
| 312 | 陨石的秘密 | 0.00% (0/0) | PKU | 1187 | |
| 313 | Gleaming the Cubes | 30.77% (4/13) | PKU | 1188 | |
| 314 | 钉子和小球 | 0.00% (0/1) | PKU | 1189 |