nowcoder-contest/5666/J 1 题目描述 Given n, find the value of 。 It can be proved that the value is a rational number . Print the result as mod998244353.
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链接:https://ac.nowcoder.com/acm/contest/5666/J来源:牛客网 题目描述: Given n,find the value of It can be proved that the value is a rational number .Print the r
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