Alixan14 sorry, but I don't know why you got this problem

Alixan14 everything okay with submitting this problem

vibrant_lichterman_976 what kind of problem do you have?

Sikorskyi_Olexii The image will be changed, thank you.

Super_Maksimiliano13 It's competitive programing. The main goal of this type of programming is to solve the problem and, in the case of bugs, to solve them yourself, rather than watching to see if it will work or not and simply adding code until all the tests pass. What if there are other tests? Will you also rewrite the code for all tests because you were shown that there is a bug in it?

Vlad28 задача була додана ще до 2014 року. Умову буде змінено

MaxymDvali_2012 yes,it can

chyckchyryk в умовах проведення платформа гарантує існування розвʼязку лише на С++. Тому автор не мають писати рішення на С або на Python

zviadi yeah, it’s absolutely correct

zviadi yeah, it’s absolutely correct

user518064 what exactly is the question, and what do you need help with

a.lale_salehova There are many solutions to this problem.

zviadi the operation will be performed at vertex 4, then it will be possible to reach all the others from there

zviadi Sorry, but this information is not disclosed.