{ "data": { "question": { "questionId": "2635", "questionFrontendId": "2543", "categoryTitle": "Algorithms", "boundTopicId": 2070103, "title": "Check if Point Is Reachable", "titleSlug": "check-if-point-is-reachable", "content": "

There exists an infinitely large grid. You are currently at point (1, 1), and you need to reach the point (targetX, targetY) using a finite number of steps.

\n\n

In one step, you can move from point (x, y) to any one of the following points:

\n\n\n\n

Given two integers targetX and targetY representing the X-coordinate and Y-coordinate of your final position, return true if you can reach the point from (1, 1) using some number of steps, and false otherwise.

\n\n

 

\n

Example 1:

\n\n
\nInput: targetX = 6, targetY = 9\nOutput: false\nExplanation: It is impossible to reach (6,9) from (1,1) using any sequence of moves, so false is returned.\n
\n\n

Example 2:

\n\n
\nInput: targetX = 4, targetY = 7\nOutput: true\nExplanation: You can follow the path (1,1) -> (1,2) -> (1,4) -> (1,8) -> (1,7) -> (2,7) -> (4,7).\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "判断一个点是否可以到达", "translatedContent": "

给你一个无穷大的网格图。一开始你在 (1, 1) ,你需要通过有限步移动到达点 (targetX, targetY) 。

\n\n

每一步 ,你可以从点 (x, y) 移动到以下点之一:

\n\n\n\n

给你两个整数 targetX 和 targetY ,分别表示你最后需要到达点的 X 和 Y 坐标。如果你可以从 (1, 1) 出发到达这个点,请你返回true ,否则返回 false 

\n\n

 

\n\n

示例 1:

\n\n
输入:targetX = 6, targetY = 9\n输出:false\n解释:没法从 (1,1) 出发到达 (6,9) ,所以返回 false 。\n
\n\n

示例 2:

\n\n
输入:targetX = 4, targetY = 7\n输出:true\n解释:你可以按照以下路径到达:(1,1) -> (1,2) -> (1,4) -> (1,8) -> (1,7) -> (2,7) -> (4,7) 。\n
\n\n

 

\n\n

提示:

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