August 18, 2021 daily
05:00 streching, jogging 05:45~06:50 leetcode -Android Unlock Pattern: https://leetcode.com/explore/interview/card/google/62/recursion-4/484/ class Solution { public: vector directions = {{0, 1}, {1, 0}, {-1, 0}, {0, -1}, {1, 1}, {1, -1}, {-1, 1}, {-1, -1}, {1, 2}, {1, -2}, {2, 1}, {2, -1}, {-1, 2}, {-1, -2}, {-2, 1}, {-2, -1} }; int visited[3][3]; int traverse(int y, int x, int m, int n, int d)..