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| Problem ID | Title | Source | AC | Submit | |
| Problem ID | Title | Source | AC | Submit | |
| 2300 | [HAOI2011]防线修建 | 198 | 403 | ||
| 2301 | [HAOI2011]Problem b | 546 | 1332 | ||
| 2302 | [HAOI2011]Problem c | 137 | 254 | ||
| 2303 | [Apio2011]方格染色 | 286 | 706 | ||
| 2304 | [Apio2011]寻路 | 95 | 297 | ||
| 2305 | [Apio2011]猜单词 | 0 | 9 | ||
| 2306 | [Ctsc2011]幸福路径 | Day1 | 202 | 420 | |
| 2307 | [Ctsc2011]无穷图的桥 | Day2 | 10 | 98 | |
| 2309 | [Ctsc2011]字符串重排 | 鸣谢wjbzbmr | 16 | 61 | |
| 2321 | [BeiJing2011集训]星器 | 204 | 319 | ||
| 2322 | [BeiJing2011]梦想封印 | Day3 | 127 | 315 | |
| 2323 | [ZJOI2011]细胞 | Day2 | 147 | 283 | |
| 2324 | [ZJOI2011]营救皮卡丘 | Day2 | 531 | 1384 | |
| 2325 | [ZJOI2011]道馆之战 | Day2 | 337 | 883 | |
| 2326 | [HNOI2011]数学作业 | 矩阵乘法 | 551 | 981 | |
| 2327 | [HNOI2011]勾股定理 | 116 | 218 | ||
| 2328 | [HNOI2011]赛车游戏 | 151 | 306 | ||
| 2329 | [HNOI2011]括号修复 | Splay | 237 | 481 | |
| 2330 | [SCOI2011]糖果 | Day1 | 672 | 2387 | |
| 2331 | [SCOI2011]地板 | Day1 | 235 | 534 | |
| 2332 | [SCOI2011]植物大战僵尸 | Day1 | 13 | 38 | |
| 2333 | [SCOI2011]棘手的操作 | Day2 | 269 | 690 | |
| 2334 | [SCOI2011]镜像拆分 | Day2 | 7 | 10 | |
| 2335 | [SCOI2011]飞镖 | Day2 | 104 | 365 | |
| 2336 | [HNOI2011]任务调度 | Day2 | 99 | 292 | |
| 2337 | [HNOI2011]XOR和路径 | Day2 | 264 | 483 | |
| 2338 | [HNOI2011]数矩形 | Day2 | 334 | 837 | |
| 2339 | [HNOI2011]卡农 | Day2 | 232 | 388 | |
| 2342 | [Shoi2011]双倍回文 | 字符串 | 316 | 921 | |
| 2351 | [BeiJing2011]Matrix | 156 | 550 | ||
| 2352 | [BeiJing2011]database | 50 | 133 | ||
| 2384 | [Ceoi2011]Match | 122 | 263 | ||