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Bug report on ModInt #63

@sounansya

Description

@sounansya

有名modでない奇数modでの階乗の計算にバグがあります。例えば、

ModIntFactory fa = new ModIntFactory((int)1e9 + 5);
ModIntFactory.ModInt t = fa.factorial(1);
System.out.println(t.value());

を実行すると466332271が出力されます。

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