POJ - 2018 Best Cow Fences (二分 长度>=l的子序列最大和+前缀和)

Best Cow Fenceshtml Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 14467   Accepted: 4664 Descriptionios Farmer John's farm consists of a long row of N (1 <= N <= 100,000)fields. Each fi
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