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4982:Goffi and Squary Partition

题目描述
Recently, Goffi is interested in squary partition of integers.

A set \(X\) of \(k\) distinct positive integers is called squary partition of \(n\) if and only if it satisfies the following conditions:
[ol]
  • the sum of \(k\) positive integers is equal to \(n\)

  • one of the subsets of \(X\) containing \(k - 1\) numbers sums up to a square of integer.
  • [/ol]
    For example, a set {1, 5, 6, 10} is a squary partition of 22 because 1 + 5 + 6 + 10 = 22 and 1 + 5 + 10 = 16 = 4 × 4.

    Goffi wants to know, for some integers \(n\) and \(k\), whether there exists a squary partition of \(n\) to \(k\) distinct positive integers.
    输入解释
    Input contains multiple test cases (less than 10000). For each test case, there's one line containing two integers \(n\) and \(k\) (\(2 \le n \le 200000, 2 \le k \le 30\)).
    输出解释
    For each case, if there exists a squary partition of \(n\) to \(k\) distinct positive integers, output "YES" in a line. Otherwise, output "NO".
    输入样例
    2 2
    4 2
    22 4
    输出样例
    NO
    YES
    YES
    来自杭电HDUOJ的附加信息
    Recommend heyang

    该题目是Virtual Judge题目,来自 杭电HDUOJ

    题目来源 BestCoder Round #6

    源链接: HDU-4982

    最后修改于 2020-10-25T23:18:38+00:00 由爬虫自动更新

    共提交 0

    通过率 --%
    时间上限 内存上限
    2000/1000MS(Java/Others) 32768/32768K(Java/Others)