Problem Solving-Baekjoon

This is an auto push repository for Baekjoon Online Judge created with BaekjoonHub.

  

Background

This is a record of my problem-solving activities on Baekjoon Online Judge(It is basically a Korean version of LeetCode), which I have been doing as a hobby since March 22, 2022.

It all started from a need to retain the knowledge of Fortran that I learned during my double major in Atmospheric Science during university, and also from a desire to understand computer science better while studying Geographic Information Science (GIS).

The reason I used Fortran a lot for PS is as follows:

• The judging platform (Baekjoon) did not support features like the C++ STL in Fortran, so I had to implement many things on my own.
• Among the languages I knew, it was the fastest.
• The "romance" of being the language that sent humans to the moon.

Most of my Fortran code is written with the goal of code golfing (writing code as concisely as possible, which may affect readability). As a result, the indentation and structure are often not ideal, which can make the code harder to read.

Baekjoon Difficulty and Level System

Baekjoon Online Judge categorizes problems into different difficulty levels and users into tiers based on their problem-solving abilities. Here's a breakdown:

1. Problem Difficulty

Problems are divided into five difficulty levels based on algorithmic complexity and problem-solving requirements:

• Bronze: Basic problems involving simple input/output and mathematical logic.
• Silver: Intermediate problems that require basic algorithms and data structures.
• Gold: Advanced problems involving complex algorithms and optimizations.
• Platinum: Very challenging problems requiring deep knowledge of algorithms and data structures.
• Diamond: Extremely difficult problems, often requiring high-level mathematical and algorithmic expertise.

2. User Level System

Users' levels are determined by the number and difficulty of problems they’ve solved. The levels are:

• Bronze: Basic skills, solving simple problems.
• Silver: Intermediate skills, understanding basic algorithms and data structures.
• Gold: Advanced skills, solving complex algorithmic problems.
• Platinum: High-level skills, solving optimization and challenging problems.
• Diamond: Elite level, solving very difficult problems with advanced algorithms.

3. Level Up Criteria

Your level is determined by:

• Number of problems solved
• Difficulty of problems solved

4. Level Up Goals

To improve your level:

• Bronze: Focus on basic problem-solving and algorithms.
• Silver: Master intermediate algorithms and data structures.
• Gold: Tackle more complex problems and focus on optimizations.
• Platinum: Solve advanced algorithmic challenges.
• Diamond: Reach the highest level by solving elite problems.

This system helps users systematically improve their problem-solving skills and track their progress.