CF474C.Captain Marmot

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题目描述

Captain Marmot wants to prepare a huge and important battle against his enemy, Captain Snake. For this battle he has nn regiments, each consisting of 44 moles.

Initially, each mole ii ( 1<=i<=4n1<=i<=4n ) is placed at some position (xi,yi)(x_{i},y_{i}) in the Cartesian plane. Captain Marmot wants to move some moles to make the regiments compact, if it's possible.

Each mole ii has a home placed at the position (ai,bi)(a_{i},b_{i}) . Moving this mole one time means rotating his position point (xi,yi)(x_{i},y_{i}) 9090 degrees counter-clockwise around it's home point (ai,bi)(a_{i},b_{i}) .

A regiment is compact only if the position points of the 44 moles form a square with non-zero area.

Help Captain Marmot to find out for each regiment the minimal number of moves required to make that regiment compact, if it's possible.

输入格式

Captain Marmot wants to prepare a huge and important battle against his enemy, Captain Snake. For this battle he has nn regiments, each consisting of 44 moles.

Initially, each mole ii ( 1<=i<=4n1<=i<=4n ) is placed at some position (xi,yi)(x_{i},y_{i}) in the Cartesian plane. Captain Marmot wants to move some moles to make the regiments compact, if it's possible.

Each mole ii has a home placed at the position (ai,bi)(a_{i},b_{i}) . Moving this mole one time means rotating his position point (xi,yi)(x_{i},y_{i}) 9090 degrees counter-clockwise around it's home point (ai,bi)(a_{i},b_{i}) .

A regiment is compact only if the position points of the 44 moles form a square with non-zero area.

Help Captain Marmot to find out for each regiment the minimal number of moves required to make that regiment compact, if it's possible.

输出格式

Print nn lines to the standard output. If the regiment ii can be made compact, the ii -th line should contain one integer, the minimal number of required moves. Otherwise, on the ii -th line print "-1" (without quotes).

输入输出样例

  • 输入#1

    4
    1 1 0 0
    -1 1 0 0
    -1 1 0 0
    1 -1 0 0
    1 1 0 0
    -2 1 0 0
    -1 1 0 0
    1 -1 0 0
    1 1 0 0
    -1 1 0 0
    -1 1 0 0
    -1 1 0 0
    2 2 0 1
    -1 0 0 -2
    3 0 0 -2
    -1 1 -2 0
    

    输出#1

    1
    -1
    3
    3
    

说明/提示

In the first regiment we can move once the second or the third mole.

We can't make the second regiment compact.

In the third regiment, from the last 33 moles we can move once one and twice another one.

In the fourth regiment, we can move twice the first mole and once the third mole.

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