ある2行2列の行列の入力に対して、行列式を出力してください。
例えば、入力が(1,2; 3,4)のとき、出力は1*4-3*2で-2となります。
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Last Solution submitted on Apr 05, 2026

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Pauli Huusari kazuyoshi kouno Riccardo G. Lorenzo

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