Fixed. See @Bouchert below's comment. Your answer will still be wrong after the fix.

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Fixed.

I have the same issue.

Thanks Souzooka.

That test got me at first too. Look closely at the input and it should become clear why it's expecting false.

for c# test case: "foo"
when my code return the boolean value false, I get this error:
System.NullReferenceException : Object reference not set to an instance of an object

There seems to be an error for the following BasicTest for c#:
101, 9223372036854775806, 11
Expected: 838488366986797815
But was: 838488366986797791

since 9223372036854775806 / 11 = 838488366986797800
I can't see how the expected value is higher than it

I got an error for input 0 when I try to submit my c# solution:
Expected: False
But was: True
I think the result should be true for 0

c#

Which language?

I think there is an error in the following test case for n = 1:
Random test for 1
Expected string length 0 but was 1. Strings differ at index 0.
Expected: <string.Empty>
But was: "1"

No, it is correct.

The following expected value is wrong
b=3, p=1, dishes:1/1/2/2/2/2
FAILED:: Expected: 2 But was: 1

The proposed solution works. Thanks.