Python Solution for Codeforces Problem 158A - Next Round

Introduction

Codeforces, a platform synonymous with competitive programming, offers an array of intriguing problems that challenge programmers' logical and algorithmic thinking. Among these, Codeforces problem 158A - Next Round, explores a captivating scenario where participants advance based on their scores. This article unveils an optimized Python solution for the problem, breaking down the code's mechanics, and emphasizing the significance of Codeforces in honing programming skills.

Codeforces Problem 158A - Next Round

Codeforces problem 158A, aptly titled "Next Round," sets the stage for a competitive environment where participants are evaluated based on their scores. The challenge beckons programmers to determine the count of participants who advance to the next round, given their scores and a specific cutoff score.

Python Solution for Problem 158A - Next Round

def main():
	from sys import stdin, stdout
	inp = [int(x) for x in stdin.read().split()]
	n = inp.pop(0)
	k = inp.pop(0)
	k_th = inp[k-1]
	cnt = 0
	for x in inp:
		if x and x >= k_th:
			cnt += 1;
	stdout.write(str(cnt) + '\n')
if __name__ == '__main__':
	main()

Explanation of the Python Code

1. Input and Setup: The code begins by reading input values using the `stdin` stream. The first integer `n` represents the total number of participants, and the second integer `k` denotes the position of the participant whose score determines the cutoff. The input list `inp` holds the scores.

2. Determining the Cutoff Score: The code extracts the `k_th` score from the list of scores, representing the score of the participant at the `k`-th position.

3. Counting Advancing Participants: The variable `cnt` is initialized to track the count of participants who advance to the next round. A loop iterates through the remaining scores in the `inp` list. If a score is greater than or equal to the cutoff score `k_th`, and it's not equal to 0, the participant is eligible for the next round, and `cnt` is incremented.

4. Output Display: The final value of `cnt` is written to the standard output using the `stdout` stream.

Conclusion

Competitive programming fosters a realm where problem-solving prowess flourishes, as evidenced by Codeforces problem 158A - Next Round. The Python solution dissected above empowers programmers to efficiently compute the count of advancing participants based on scores and a predetermined cutoff. This coding pursuit underscores the importance of conditional logic and iteration in problem-solving.
Platforms like Codeforces cultivate an ideal environment for nurturing problem-solving skills, refining coding efficiency, and participating in exhilarating coding contests. This article functions as a guide, shedding light on the intricacies of the Next Round problem and illuminating the path toward unraveling analogous algorithmic puzzles.
Embark on the captivating journey of competitive programming, fortified with a comprehensive understanding of core concepts. This expertise empowers you to gracefully conquer coding challenges, fostering an everlasting voyage of advancement and exploration. Happy coding and problem-solving!