Question 71
Bogdan drew $2017$ vertical and $2018$ horizontal lines in the rectangle $Q$. These lines divide $Q$ into $2018 \times 2019$ smaller not necessarily equal rectangles. Two children want to determine the perimeter of $Q$. Andrew says that he can do it by choosing some $2019$ smaller rectangles and getting to know their perimeters. On the contrary, Olesya says that she can do it by choosing $4036$ smaller rectangles. Who is right about the number of smaller rectangles, perimeters of which one should know in order to determine the perimeter of $Q$?
(Bogdan Rublyov)
(Bogdan Rublyov)