Your code fails to address this --> There are no fractions of people. At the end of each year, the population count is an integer: 252.8 people round down to 252 persons.

Sorry for delay on answering.

You can think about that if you need to move 1 box to the second, then move 100 to first ([1, 100]). See what your code return, compare with the correct answer counting by yourself.

thank u bro

Carefully read the first example in the description.
If needed, perform your algorithm by hand and compare the results for each step.

Hi @MichosDV - it seems that you have passed the kata, so just adding this comment so that other users don't think there is anything weird/problems with the kata.

FYI, your problem is/was probably due to the behaviour of //, for example:

correct = 1 # let's say this is the correct answer
your_sol = 1.372 # let's say this was your answer

rounded_with_6 = (your_sol * 6 ) // 6
rounded_with_591227 = (your_sol * 591227 ) // 591227

print(rounded_with_6) # = 1.0, now matches the correct answer
print(rounded_with_591227) # = 1.0, now also matches the correct answer

you can see above that multiplying by 6 then // 6 just has the effect of rounding your answer; the specific value of 6 is irrelevant - you could just as well use 591227 as I did above.

The "exact solution" - being made up of a sum of integers - shouldn't need to be rounded though at any point, so I'm not sure where your tiny mistake crept in.

The exact solution does not pass. Multiplied by 6, then //6, and all the tests passed.

i don't understand the task and "Euler transform"

which language?

You must use BigInt for all numbers in this kata. When you have an integer in variable a, you can wrap it as BigInt(a). When you have a value, let's say 10, you can make it a BigInt by appending 'n' to it 10n

There are 500 random tests. You should try to optimize more

How many random tests are in the attempt? I get around 60 and I cannot complete them within 12 seconds.