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题库练习 Vectors

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A8227 | $Vectors$

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内存限制256MB

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题目描述

At a geometry lesson Gerald was given a task: to get vector $B$ out of vector $A$ . Besides, the teacher permitted him to perform the following operations with vector $А$ : - Turn the vector by $90$ degrees clockwise. - Add to the vector a certain vector $C$ . Operations could be performed in any order any number of times. Can Gerald cope with the task?

输入格式

The first line contains integers $x_{1}$ и $y_{1}$ — the coordinates of the vector $A$ ( $-10^{8}<=x_{1},y_{1}<=10^{8}$ ). The second and the third line contain in the similar manner vectors $B$ and $C$ (their coordinates are integers; their absolute value does not exceed $10^{8}$ ).

输出格式

Print "YES" (without the quotes) if it is possible to get vector $B$ using the given operations. Otherwise print "NO" (without the quotes).

输入输出样例

输入 #1

0 0
1 1
0 1

输出 #1

YES

输入 #2

0 0
1 1
1 1

输出 #2

YES

输入 #3

0 0
1 1
2 2

输出 #3

NO

C++ 编辑器

输入

输出