Hello, CF community Yesterday, I was challenged by my dear friend and competitor Pety to solve the problem 4A - Watermelon which he bragged about already solving it. As the rating suggests, I am far more skilled and I couldn't accept such disrespect, so I accepted the challange. After 1 submission (compared to his 75) I, of course, solved the problem and proved my worth once again. What did we learn from this blog? Never let masters disrespect you