Find the tangent lines between a point $p$ and a circle $c$.

Constraints

• $-1,000 \leq px, py, cx, cy \leq 1,000$
• $1 \leq r \leq 1,000$
• Distance between $p$ and the center of $c$ is greater than the radius of $c$.

Input

The input is given in the following format.

$\;$
$\; cy \; r$

$px$ and $py$ represents the coordinate of the point $p$. $cx$, $cy$ and $r$ represents the center coordinate and radius of the circle $c$ respectively. All input values are given in integers.

Output

Print coordinates of the tangent points on the circle $c$ based on the following rules.

• Print the coordinate with smaller $x$ first. In case of a tie, print the coordinate with smaller $y$ first.

The output values should be in a decimal fraction with an error less than 0.00001.

Examples

Input

0 0
2 2 2

Output

0.0000000000 2.0000000000
2.0000000000 0.0000000000

Input

-3 0
2 2 2

Output

0.6206896552 3.4482758621
2.0000000000 0.0000000000

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