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| 题号 | 状态 | 题目名称 | 标签 | 通过率 | |
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| L3043 | [USACO12JAN] Bovine Alliance G | 连通块 |
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| L3044 | [USACO12FEB] Relocation S |
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| L3045 | [USACO12FEB] Cow Coupons G | 堆 贪心 |
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| L3046 | [USACO12FEB] Symmetry G | 枚举 离散化 |
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| L3047 | [USACO12FEB] Nearby Cows G | 动态规划 DP 树形 DP |
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| L3048 | [USACO12FEB] Cow IDs S | 组合数学 位运算 |
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| L3049 | [USACO12MAR] Landscaping S |
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| L3050 | [USACO12MAR] Large Banner G |
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| L3051 | [USACO12MAR] Haybale Restacking G |
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| L3052 | [USACO12MAR] Cows in a Skyscraper G | 状压 DP 贪心 |
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| L3053 | [USACO12OPEN] Unlocking Blocks S | 最短路 贪心 枚举 |
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| L3054 | [USACO12OPEN] Running Laps S |
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| L3055 | [USACO12OPEN] Tied Down G |
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| L3056 | [USACO12NOV] Clumsy Cows S | 前缀和 栈 模拟 贪心 |
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| L3057 | [USACO12NOV] Distant Pastures S |
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| L3058 | [USACO12NOV] Balanced Cow Breeds G/S |
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| L3059 | [USACO12NOV] Concurrently Balanced Strings G |
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| L3060 | [USACO12NOV] Balanced Trees G | 点分治 |
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| L3061 | [USACO12DEC] Crazy Fences S | 计算几何 |
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| L3062 | [USACO12DEC] Wifi Setup S |
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