# Day 166 Of Doing Codeforces Everyday Until I Reach Expert

Education

## Introduction

Hello everyone! Today marks the 166th day of my daily participation in Codeforces until I reach the Expert level. Lately, I've noticed that the Codeforces website is a bit laggy for me. While my connection seems fine when accessing platforms like LeetCode or CSES, Codeforces takes quite a while to load. It’s frustrating at times, but let’s not dwell on that. Instead, let’s dive into some problems.

### Problem Exploration

I’m planning to tackle Problem E from the latest Division 4. Although it might not be overly complex, I anticipate that it will still require some time to solve. Aside from that, I aim to shift my focus to learning new algorithms instead of sticking solely to greedy approaches and implementation problems on Codeforces, as they can become rather tedious.

**The Problem Breakdown**

The task involves an array of integers, where I need to choose an index to minimize the value of `X`

, based on a set of operations. The key here is to divide the array into two segments, one positive and the other negative. Initially, I struggled to comprehend the details of the problem, particularly the mathematical components involved.

### Understanding the Solution Approach

As I reflected upon the problem, it struck me that it bears similarities to a problem I had encountered and solved earlier in the day, which involved dividing numbers into two groups to minimize their difference. This realization motivated me to attempt a binary search strategy, even though I doubted its effectiveness due to the problem's nature.

After much brainstorming and debugging, I was able to formulate a strategy to approach the problem. Despite my initial confusion, I made it through and submitted my solution. To my delight, it was accepted.

### Transitioning to Other Platforms

Once I completed the Codeforces problem, I felt compelled to switch gears and explore exercises on other platforms like LeetCode and CSES, particularly focusing on medium-level problems. One of the challenges involved flipping three consecutive elements in a binary array to convert all numbers to 1. This required analyzing conditions under which it would be impossible to achieve the desired outcome, leading to a robust discussion regarding the structure of the array.

Through various examples, I was able to piece together a solution, albeit with standard methods. I learned that, even in situations where I might hit a wall, perseverance pays off. After completing a few more problems on LeetCode, I found myself reflecting on the importance of diversifying my training across different platforms.

### Conclusion

Reflecting on my progression thus far, I realize that while I may not have completed an overwhelming number of problems, each day brings new insights. I concluded today’s session feeling accomplished and looking forward to the next challenges that await.

## Keyword

- Codeforces
- Expert Level
- Problems
- Algorithms
- Greedy Approach
- Binary Search
- Problem E
- Transition
- LeetCode
- CSES
- Training

## FAQ

**Q1: How many days have you been doing Codeforces?**

A1: I have been participating in Codeforces every day for 166 days as I work towards reaching the Expert level.

**Q2: Why did you switch from Codeforces to LeetCode?**

A2: I transitioned to LeetCode to explore and learn new algorithms, moving beyond the implementation-heavy problems on Codeforces that can sometimes feel monotonous.

**Q3: What type of problems do you find engaging?**

A3: I find problems that challenge my understanding of algorithms and data structures to be the most engaging. I prefer not to rely solely on greedy strategies.

**Q4: How do you assess your progress?**

A4: I assess my progress by the understanding I gain from solving various problems and the breadth of topics I can tackle, noting improvements in my approach and techniques.

**Q5: Do you have any specific goals for your training?**

A5: Yes, my primary goal is to become an Expert on Codeforces, but I also aim to become proficient in algorithmic problem-solving across multiple platforms.