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- USACO 1.2.1 Milking Cows (46 篇回复)
- USACO 2.4.1 The Tamworth Two (28 篇回复)
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- USACO 2.1.2 Ordered Fractions (38 篇回复)
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- USACO 2.3.2 Cow Pedigrees (52 篇回复)
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- USACO 2.3.1 Longest Prefix (60 篇回复)
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- USACO 3.3.5 A Game (34 篇回复)
- USACO 1.1.1 Your Ride Is Here (7 篇回复)
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- USACO 4.4.1 Shuttle Puzzle (18 篇回复)
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- USACO 2.4.4 Bessie Come Home (40 篇回复)
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- USACO 1.1.2 Greedy Gift Givers (7 篇回复)
- USACO 1.5.4 Checker Challenge (49 篇回复)
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- USACO 2.1.1 The Castle (55 篇回复)
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- USACO 3.1.2 Score Inflation (39 篇回复)
- USACO 3.3.1 Riding the Fences (25 篇回复)
- USACO 3.2.5 Magic Squares (42 篇回复)
- USACO 3.2.6 Sweet Butter (71 篇回复)
- USACO 3.2.3 Spinning Wheels (32 篇回复)
- USACO 3.2.2 Stringsobits (30 篇回复)
- USACO 3.4.1 Closed Fences (56 篇回复)
- USACO 3.4.3 Electric Fence (23 篇回复)
- USACO 4.2.2 The Perfect Stall (22 篇回复)
- USACO 4.1.3 Fence Loops (23 篇回复)
- USACO 4.1.2 Fence Rails (26 篇回复)
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- USACO 1.2.4 Palindromic Squares (13 篇回复)
- USACO 2.2.3 Runaround Numbers (54 篇回复)
- USACO 2.2.2 Subset Sums (18 篇回复)
- USACO 2.2.1 Preface Numbering (35 篇回复)
- USACO 3.1.6 Stamps (28 篇回复)
- USACO 1.5.1 Number Triangles (15 篇回复)
- USACO 2.1.3 Sorting a Three-Valued Sequence (40 篇回复)
- USACO 1.4.2 The Clocks (60 篇回复)
- USACO 2.3.5 Controlling Companies (30 篇回复)
- USACO 4.2.1 Drainage Ditches (32 篇回复)
- USACO 1.3.2 Barn Repair (34 篇回复)
- USACO 3.1.5 Contact (36 篇回复)
- USACO 5.1.3 Musical Themes (20 篇回复)
- USACO 3.2.1 Factorials (28 篇回复)
- USACO 2.4.2 Overfencing (37 篇回复)
- USACO 1.2.5 Dual Palindromes (15 篇回复)
- USACO 1.5.3 Superprime Rib (17 篇回复)
- USACO 1.5.2 Prime Palindromes (25 篇回复)
- USACO 1.4.4 Mother's Milk (25 篇回复)
- USACO 1.3.1 Mixing Milk (25 篇回复)
- USACO 4.4.2 Pollutant Control (37 篇回复)
- USACO 1.2.3 Name That Number (34 篇回复)
- USACO 1.2.2 Transformations (34 篇回复)
- USACO 5.4.2 Canada Tour (7 篇回复)
- USACO 1.1.4 Broken Necklace (28 篇回复)
- USACO 4.2.4 Cowcycles (12 篇回复)
- USACO 4.3.2 The Primes (51 篇回复)
- USACO 1.1.3 Friday the Thirteenth (39 篇回复)