So here’s the story... I was doing Codeforces Round 1099 (Div. 2) recently and things were going pretty well. I had managed to solve A, B, C, and D, and there were still about 45 minutes left on the clock. I looked at problem E, read it for about a minute, and my brain just went "hell nahh". I didn't feel like even trying to untangle that one. Out of pure curiosity, I opened 2231F - Quadratic Jumps...