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How to Solve Determine if a Cell Is Reachable at a Given Time Problem
Master the Determine if a Cell Is Reachable at a Given Time LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#2849
LeetCode ProblemDetermine if a Cell Is Reachable at a Given Time
You are given four integers sx, sy, fx, fy, and a non-negative integer t. In an infinite 2D grid, you start at the cell (sx, sy). Each second, you must move to any of its adjacent cells. Return true if you can reach cell (fx, fy) after exactly t seconds, or false otherwise. A cell's adjacent cells are the 8 cells around it that share at least one corner with it. You can visit the same cell several times.
Math
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Problem Breakdown
Understanding the Determine if a Cell Is Reachable at a Given Time Problem
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Problem Statement
You are given four integers sx, sy, fx, fy, and a non-negative integer t. In an infinite 2D grid, you start at the cell (sx, sy). Each second, you must move to any of its adjacent cells. Return true if you can reach cell (fx, fy) after exactly t seconds, or false otherwise. A cell's adjacent cells are the 8 cells around it that share at least one corner with it. You can visit the same cell several times.
MediumProblem #2849
LeetCodeDetermine if a Cell Is Reachable at a Given Time
Related Topics
Math
How Phantom Code Helps
Get real-time assistance for Determine if a Cell Is Reachable at a Given Time problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
sx = 2, sy = 4, fx = 7, fy = 7, t = 6
Output
true
# Example 2
Input
sx = 3, sy = 1, fx = 7, fy = 3, t = 3
Output
false
Constraints
1 <= sx, sy, fx, fy <= 109
0 <= t <= 109
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Solve Determine if a Cell Is Reachable at a Given Time — You are given four integers sx, sy, fx, fy, and a non-negative integer t. In an ...
Here's the optimal approach using Math:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Determine if a Cell Is Reachable at a Given Time and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Determine if a Cell Is Reachable at a Given Time during interviews?
Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
What if the interviewer asks follow-up questions or modifications to problems like Determine if a Cell Is Reachable at a Given Time?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
Can Phantom Code help me communicate my solution for problems like Determine if a Cell Is Reachable at a Given Time?
Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for Determine if a Cell Is Reachable at a Given Time type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during Determine if a Cell Is Reachable at a Given Time interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like Determine if a Cell Is Reachable at a Given Time during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with Determine if a Cell Is Reachable at a Given Time style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in Determine if a Cell Is Reachable at a Given Time interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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