I could not solve either LeetCode or Project Euler problems for about 3 months as I was very busy with new job and transcontinental relocation. Now that I am mostly settled, I find some time to get back to my recent hobby. I was afraid whether the python basic skills are all gone. It turns out that it is not the case. I solved a few easiest LeetCode problems to learn that I still have the most basics pretty much like I had until a few months ago. Great.
Anyway while solving #1323 [Maximum 69 Number] I hit zero run time. The first time ever seeing zero, out of 600+ problems solved so far. Interesting.
