Codeforces Round 484 (Div. 2)
E
Billiard
Codeforces
2600
原题
← DF →
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Consider a billiard table of rectangular size $n \times m$ with four pockets. Let's introduce a coordinate system with the origin at the lower left corner (see the picture).

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image

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There is one ball at the point $(x, y)$ currently. Max comes to the table and strikes the ball. The ball starts moving along a line that is parallel to one of the axes or that makes a $45^{\circ}$ angle with them. We will assume that:

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  1. the angles between the directions of the ball before and after a collision with a side are equal,
  2. the ball moves indefinitely long, it only stops when it falls into a pocket,
  3. the ball can be considered as a point, it falls into a pocket if and only if its coordinates coincide with one of the pockets,
  4. initially the ball is not in a pocket.
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Note that the ball can move along some side, in this case the ball will just fall into the pocket at the end of the side.

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Your task is to determine whether the ball will fall into a pocket eventually, and if yes, which of the four pockets it will be.

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Input

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The only line contains $6$ integers $n$, $m$, $x$, $y$, $v_x$, $v_y$ ($1 \leq n, m \leq 10^9$, $0 \leq x \leq n$; $0 \leq y \leq m$; $-1 \leq v_x, v_y \leq 1$; $(v_x, v_y) \neq (0, 0)$) — the width of the table, the length of the table, the $x$-coordinate of the initial position of the ball, the $y$-coordinate of the initial position of the ball, the $x$-component of its initial speed and the $y$-component of its initial speed, respectively. It is guaranteed that the ball is not initially in a pocket.

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Output

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Print the coordinates of the pocket the ball will fall into, or $-1$ if the ball will move indefinitely.

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Note

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The first sample:

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image

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The second sample:

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image

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In the third sample the ball will never change its $y$ coordinate, so the ball will never fall into a pocket.

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样例

Input #1
4 3 2 2 -1 1
Output #1
0 0
InputCopy OutputCopy
Input #2
4 4 2 0 1 1
Output #2
-1
InputCopy OutputCopy
Input #3
10 10 10 1 -1 0
Output #3
-1
InputCopy OutputCopy
题目信息
题号
982E
时间限制
1 s
内存限制
256 MB
标签
计算几何
数论

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。