Задание #728

Промежуточно: Ah, we have an eager $C, I see. Are you here to learn from my collection? Good!$B$BBut be warned: just as knowledge gives power to the strong...it will drive the weak mad.

Be discrete with your signs, $C. There are those who do not believe the righteousness of our pledge.$B$BAnd there are those who would see us fail if they knew of us.$B$BWe must always be careful. And watchful. And patient.