题目描述
For given a circle $c$ and a line $l$, print the coordinates of the cross points of them.
Constraints
- $p1$ and $p2$ are different
- The circle and line have at least one cross point
- $1 \leq q \leq 1,000$
- $-10,000 \leq cx, cy, x1, y1, x2, y2 \leq 10,000$
- $1 \leq r \leq 10,000$
Input
The input is given in the following format.
$cx\; cy\; r$
$q$
$Line_1$
$Line_2$
:
$Line_q$
In the first line, the center coordinate of the circle and its radius are given by $cx$, $cy$ and $r$. In the second line, the number of queries $q$ is given.
In the following $q$ lines, as queries, $Line_i$ are given ($1 \leq i \leq q$) in the following format.
$x_1\; y_1\; x_2\; y_2$
Each line is represented by two points $p1$ and $p2$ which the line crosses. The coordinate of $p1$ and $p2$ are given by ($x1$, $y1$) and ($x2$, $y2$) respectively. All input values are given in integers.
Output
For each query, print the coordinates of the cross points in the following rules.
- If there is one cross point, print two coordinates with the same values.
- 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 0.000001.
Example
Input
2 1 1
2
0 1 4 1
3 0 3 3
Output
1.00000000 1.00000000 3.00000000 1.00000000
3.00000000 1.00000000 3.00000000 1.00000000
输入格式
见题面
输出格式
见题面