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第7問 ABC085B Kagami Mochi$n=@aとすると、nに配列aの長さが代入されます。これを代入を経ずに得たい場合にscalarを使います。7.pl #!/usr/bin/perl $n=<>; $h{$_}=1 for<>; print scalar keys %h; 第8問 ABC085C Otoshidama1000円札と5000円札の枚数を全探索します。