this post was submitted on 30 Jul 2025
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-1 comes from the wish to make the total 0.
but they asked for 0! = 1 wishes, so it should be 1 - 1 = 0 wishes remaining, and not 0 - 1 = -1
sorry, but i had to !unexpectedfactorial@sopuli.xyz
Updating the balance after granting the wish is bad practice. This genie is begging for a reentrancy attack.
If the genie knows the wish counter automatically decrements after every wish execution, he should set the wish counter to 1 to fullfill a total of 0 wishes. But since he's a genie I'm sure he has unrestricted rights to modify the wish counter.