复制&粘贴2(A.c/cpp/pas/in/out)
(Time Limit:1s Memory Limit:256MB) (Time Limit:1s Memory L
阅读背景：
NOIP模拟题 2016.11.14 [动态规划] [线段树优化DP] [字符串的复制粘贴DP]
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