UVa10366 Faucet Flow [思维模拟]
UVa1153 Keep the Customer Satisfied [贪心]
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LP1484 种树 [未充分证明]
LP2403 [SDOI2010]所驼门王的宝藏 [缩点]
LP4381 [IOI2008]Island [基环树/DP]
LP2163 [SHOI2007]园丁的烦恼 [CDQ分治]