- Difficulty: Easy
- Tags: LeetCode, Easy, Brainteaser, Math, Dynamic Programming, Game Theory, leetcode-1025, O(1), DP
Problem
Alice and Bob take turns playing a game, with Alice starting first.
Initially, there is a number n
on the chalkboard. On each player's turn, that player makes a move consisting of:
- Choosing any
x
with0 < x < n
andn % x == 0
. - Replacing the number
n
on the chalkboard withn - x
.
Also, if a player cannot make a move, they lose the game.
Return true
if and only if Alice wins the game, assuming both players play optimally.
Example 1:
Input: n = 2 Output: true Explanation: Alice chooses 1, and Bob has no more moves.
Example 2:
Input: n = 3 Output: false Explanation: Alice chooses 1, Bob chooses 1, and Alice has no more moves.
Constraints:
1 <= n <= 1000