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新手AC這題有感1. greedy不行，cut cat cactut 或者 cat cut cactut 會出問題, 視乎比對次序，重點是greedy沒查找所有可能性，碰上字尾一樣的情況就不行 2. 留意當s1前i個字和s2前j個字能組成s3 前i+j字時, 如果s1和s2真的能組成s3, 那s1前i+1個字和s2前j個字 或者 s1前i個字和s2前j+1個字也必定能組成s3的前i+j+1個字... 很好的dp題..推薦推薦 Followed by:
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