Can anyone explain how to solve 1st question Locked Cars :)\n\n![image](https://assets.leetcode.com/users/images/1cf83291-b08f-4911-b4cf-2bec8a13dda3_1604756308.854565.png)\n![image](https://assets.leetcode.com/users/images/6e77813b-4aad-422f-b865-3298943dcac2_1604756330.4339757.png)\n![image](https://assets.leetcode.com/users/images/3fd88a10-65b1-41c6-9dbb-cfd96cab208d_1604756352.0948303.png)\n![image](https://assets.leetcode.com/users/images/984b91c4-c9ef-459f-b376-802ab2593a17_1604756360.3111386.png)\n![image](https://assets.leetcode.com/users/images/e4575c91-3023-44c1-8062-3bcb81e6b732_1604756369.856071.png)\n\n\n\n\n\n

Can anyone explain how to solve 1st question Locked Cars :)\n\n\n\n\n\n\n\n\n\n\n\n