来源：洛谷【思维 - Level 1】训练计划（training/607752），48 题全部为 USACO 题，站内题面/数据/时限均已按官方校准。
**使用建议**
- 热身组（Bronze）适合课堂 10-15 分钟手玩热手；
- 主菜组为 Silver 普及+/提高 档，按清单顺序即思维梯度；
- 进阶组为 Gold 组与提高+/省选- 档，建议先完成主菜再进入。
题目思维为核心考点：构造、计数贡献、奇偶性、逆推、树上贪心等，代码量普遍不大，重在观察结论。
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洛谷思维 Level 1 精选，48 题 USACO（构造/计数/奇偶/逆推），分热身·主菜·进阶三段梯度。
章节 1. 热身 · Bronze 组
查看成绩表开放
| 题目 | 尝试 | AC | 难度 |
|---|---|---|---|
| 355 Photoshoot | 3 | 0 | 1 |
| 356 FEB | 0 | 0 | 1 |
| 323 Moo Language | 0 | 0 | 1 |
| 8395 Rotate and Shift | 1 | 1 | 10 |
章节 2. 主菜 · Silver 基础（普及+/提高）
查看成绩表开放
| 题目 | 尝试 | AC | 难度 |
|---|---|---|---|
| 252 Redistributing Gifts | 0 | 0 | 5 |
| 149 Triangles | 1 | 1 | 3 |
| 543 Rectangular Pasture | 0 | 0 | 3 |
| 479 Stuck in a Rut | 2 | 1 | 3 |
| 296 Dance Mooves | 0 | 0 | 3 |
| 489 Spaced Out | 0 | 0 | 3 |
| 484 Just Green Enough | 0 | 0 | 3 |
| 48 Clock Tree | 0 | 0 | 3 |
| 291 Comfortable Cows | 0 | 0 | 3 |
| 544 Connecting Two Barns | 0 | 0 | 3 |
| 8394 Searching for Soulmates | 1 | 1 | 10 |
| 486 Moo Route II | 0 | 0 | 3 |
| 485 Email Filing | 0 | 0 | 3 |
| 302 Visits | 0 | 0 | 3 |
| 495 COW Operations | 0 | 0 | 3 |
| 157 Wormhole Sort | 0 | 0 | 3 |
| 126 Swapity Swapity Swap | 0 | 0 | 3 |
| 293 Bakery | 0 | 0 | 3 |
| 303 Milk Sum | 0 | 0 | 3 |
| 8396 Field Day | 5 | 1 | 10 |
| 496 Pareidolia | 0 | 0 | 3 |
| 482 Target Practice | 0 | 0 | 3 |
| 289 Bovine Acrobatics | 0 | 0 | 3 |
| 304 Bessie's Interview | 0 | 0 | 3 |
| 294 Target Practice II | 0 | 0 | 3 |
| 288 Barn Tree | 0 | 0 | 3 |
章节 3. 进阶 · Silver 提高 / Gold（提高+~省选-）
查看成绩表开放
| 题目 | 尝试 | AC | 难度 |
|---|---|---|---|
| 136 Time is Mooney | 0 | 0 | 5 |
| 492 Cowlendar | 0 | 0 | 3 |
| 561 Painting Fence Posts | 0 | 0 | 3 |
| 186 Help Yourself | 0 | 0 | 5 |
| 440 Bracelet Crossings | 0 | 0 | 5 |
| 551 Test Tubes | 0 | 0 | 3 |
| 299 Cowmpetency | 0 | 0 | 3 |
| 182 Haircut | 0 | 0 | 5 |
| 514 Farm Updates | 0 | 0 | 5 |
| 545 Circular Barn | 0 | 0 | 3 |
| 248 Bribing Friends | 0 | 0 | 5 |
| 258 Find and Replace | 0 | 0 | 5 |
| 253 Equal Sum Subarrays | 0 | 0 | 5 |
| 445 Moo Network | 0 | 0 | 5 |
| 249 Flight Routes | 0 | 0 | 5 |
| 506 Minimum Longest Trip | 0 | 0 | 5 |
| 8393 Quantum Moochanics | 1 | 1 | 10 |
| 497 The 'Winning' Gene | 0 | 0 | 3 |
