Sqrt Polynomial の checker で値の範囲をチェック #1240
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resolve #1239
チェッカーが出力を読み込むときに値の範囲チェックをせずに modint に入力しているため、出力が変な値でも AC する可能性がありました。
-1以外の場合、出力が 0 以上 MOD 未満でなければ WA にするようにしました。