24862번 - Lots of Parabolas 스페셜 저지다국어

문제

On a plane there is a set of parabolas given by equations in the form $y = a\cdot x^2 + b\cdot x + c$.

Let's consider a point to be located inside a parabola if it located above the parabola in case of positive coefficient $a,ドル or below the parabola in case of negative $a$.

On this figure, the point $P$ is located inside both parabolas, the point $Q$ is inside one of them, and the point $R$ is inside none of them.

You need to find any point that is located inside all parabolas. It is guaranteed that such point exists.

입력

The first line contains a single integer $n$ (1ドル \leq n \leq 100,000円$) --- the number of parabolas.

Each of the next $n$ lines contains three integers $a,ドル $b,ドル $c$ ($|a|, |b|, |c| \leq 10^9$; $a \neq 0$), describing a parabola $y = a\cdot x^2 + b\cdot x + c$.

출력

Print two real numbers $x$ and $y$ --- coordinates of a point located inside all parabolas.

The answer is considered correct if there exists a point at distance at most 10ドル^{-6}$ from the printed one, which is located strictly inside all parabolas.

제한

힌트