数论 费马小定理+快速幂取模

D - Sum Time Limit:1000MS     Memory Limit:131072KB     64bit IO Format:%I64d & %I64u Submit  Status Descriptionios Inputui 2 Outputspa 2 Hint 1. For N = 2, S(1) = S(2) = 1. 2. The input fi

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