| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 366 | P1090 [NOIP2004 提高组] 合并果子 / [USACO06NOV] Fence Repair G | 12 / 40 | 6 | |
| 389 | P1210 [USACO1.3] 最长的回文 Calf Flac | 2 / 6 | 10 | |
| 351 | P1213 [USACO1.4] [IOI1994] 时钟 The Clocks | 2 / 3 | 10 | |
| 266 | P1470 [USACO2.3] 最长前缀 Longest Prefix | 0 / 0 | (None) | |
| 402 | P1879 [USACO06NOV] Corn Fields G | 11 / 44 | 7 | |
| 420 | P2341 [USACO03FALL / HAOI2006] 受欢迎的牛 G | 13 / 56 | 7 | |
| 429 | P2858 [USACO06FEB] Treats for the Cows G/S | 4 / 10 | 9 | |
| 419 | P2863 [USACO06JAN] The Cow Prom S | 15 / 53 | 6 | |
| 267 | P2880 [USACO07JAN] Balanced Lineup G | 16 / 18 | 5 | |
| 291 | P2894 [USACO08FEB] Hotel G | 1 / 10 | 10 | |
| 265 | P2922 [USACO08DEC] Secret Message G | 0 / 0 | (None) | |
| 373 | P3045 [USACO12FEB] Cow Coupons G | 0 / 0 | (None) | |
| 320 | P3128 [USACO15DEC] Max Flow P | 6 / 13 | 8 | |
| 430 | P3146 [USACO16OPEN] 248 G | 4 / 19 | 9 | |
| 252 | P3405 [USACO16DEC] Cities and States S | 11 / 80 | 8 | |
| 349 | P8092 [USACO22JAN] Drought B | 3 / 10 | 10 | |
| 347 | P8185 [USACO22FEB] Blocks B | 5 / 12 | 9 | |
| 350 | P8267 [USACO22OPEN] Counting Liars B | 5 / 49 | 9 | |
| 348 | P8268 [USACO22OPEN] Alchemy B | 3 / 13 | 9 | 
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