题目描述：
LeetCode 789. Escape The Ghosts
You are playing a simplified Pacman game. You start at the point (0, 0), and your destination is (target[0], target[1]). There are several ghosts on the map, the i-th ghost starts at (ghosts ...
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[LeetCode]Escape The Ghosts
[LeetCode]Rotated Digits
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题目描述：
X is a good number if after rotating each digit individually by 180 degrees, we get a valid number that is different from X. A number is valid if each digit remains a digit after ...
LeetCode Weekly Contest 72解题报告
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LeetCode.
LeetCode Weekly Contest 72是LeetCode举办的第七十六场正式周赛，共4道题目，比赛时长1.5小时。
比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-72/
题解列表：
LeetCode 784. Letter Case Permutation
LeetCode 785. Is Graph Bipartite?
[LeetCode]K-th Smallest Prime Fraction
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题目描述：
LeetCode 786. K-th Smallest Prime Fraction
A sorted list A contains 1, plus some number of primes. Then, for every p < q in the list, we consider the fraction p/q.
What is the K-th smallest ...
[LeetCode]Cheapest Flights Within K Stops
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题目描述：
LeetCode 787. Cheapest Flights Within K Stops
There are n cities connected by m flights. Each fight starts from city u and arrives at v with a price w.
Now given all the cities and fights, together with starting ...