CCPC 대회측 어떤 사람 질문에 대한 답변중 `should read 'side' not 'size'(like in the Output section)` 이라 되있네요

Q : What is the size of a triangle? Does this refer to the area, length of one side, perimeter?
A : Sorry, that is a typo - should read 'side' not 'size' (like in the Output section)