Saki doesn't understand why she was taken to play mahjong but that's where Saki and Nodoka met. Nodoka wins but questions Saki's playing style so she asks for another game.
Therefore the only way to get plus-minus zero
لذلك، الطريقة الوحيدة للحصول على صفر زائد-ناقص
Entonces la única forma 
de tener más-menos cero
Donc pour avoir un zéro,
Perciò, l'unico modo di totalizzare +/- 0
Assim sendo, a única forma de conseguir um zero