Python Solution for Codeforces Problem 266A - Stones on the Table

Introduction

Codeforces, a hub of algorithmic challenges, provides an array of intriguing problems that test the logical thinking of programmers. Codeforces problem 266A - Stones on the Table, offers a unique perspective on color arrangement. In this article, we'll explore an optimized Python solution for this problem, comprehensively explaining the code's functionality, while underscoring the significance of Codeforces in refining programming skills.

Codeforces Problem 266A - Stones on the Table

Codeforces problem 266A, aptly named "Stones on the Table," immerses participants in the world of color arrangement. The problem tasks programmers with determining the minimum number of stones that need to be removed to ensure no consecutive stones have the same color.

Python Solution for Problem 266A - Stones on the Table

num_of_stones = eval(input())
stones_clr = input()
min_stones = 0

for i in range(num_of_stones-1):
    if stones_clr[i] == stones_clr[i+1]:
        min_stones += 1

print(min_stones)

Explanation of the Python Code

1. Input Acquisition: The code starts by reading an integer `num_of_stones`, representing the number of stones, using the `eval(input())` combination. It then reads the colors of the stones as a string `stones_clr`.

2. Minimum Stones Counting: The code initializes the variable `min_stones` to track the minimum number of stones that need to be removed. It then enters a loop that iterates through the range from 0 to `num_of_stones - 2`.

3. Consecutive Stone Comparison: Within the loop, the code compares each stone's color with the color of the stone next to it. If the colors match, indicating consecutive stones of the same color, the `min_stones` count is incremented.

4. Output Display: After the loop completes, the code prints the final value of `min_stones`, indicating the minimum number of stones that should be removed to meet the problem's conditions.

Conclusion

Competitive programming involves mastering precise problem-solving techniques, as showcased by Codeforces problem 266A - Stones on the Table. The Python solution discussed above empowers programmers to elegantly determine the minimum number of stones to be removed to ensure distinct colors between consecutive stones. This coding endeavor underscores the significance of loops, conditions, and string manipulation in problem-solving.

Platforms like Codeforces offer an optimal arena to cultivate problem-solving skills, refine coding efficiency, and participate in engaging coding contests. This article serves as a guide, unraveling the intricacies of the Stones on the Table problem and charting a course toward mastering similar algorithmic conundrums.

Embark on the captivating journey of competitive programming, equipped with a comprehensive grasp of core concepts. This expertise empowers you to elegantly tackle coding challenges, fostering a continuous cycle of improvement and exploration. Happy coding and problem-solving!