IOM 2020, Блиц — Задача 29

The Blitz-contest of IOM-2020

Условие

An Unrooted tree has 1011 leaves, and every non-leaf node of the tree has degree 3. How many nodes has the tree have?

Отговори

Решение

Внимание: Непълно решение

The source contains only the answer key, no worked solution.


Оригинал в Архива: iom-2020-blitz-tasks.pdf · официални решения: iom-2020-blitz-answers.pdf