CodeForces 1553C Penalty

这篇博客介绍了如何使用贪心策略解决一个关于字符串中A/B得分的编程问题。通过两个相似的代码段,展示了如何根据字符'?'的处理方式决定胜负,最后输出最小的回合数。

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源地址
在这里插入图片描述

先给出代码

int main() {
	int t;
//	freopen("in.txt","r",stdin); 
	cin >> t;
	while (t--) {
		string s;
		cin >> s;
		int ans = 9;
		int cnt0 = 0, cnt1 = 0;
		int leftx=5,lefty=5;
		for (int i = 0; i < 10; ++i) {
			if (i % 2 == 0) {
				if (s[i]!='0')cnt0 ++;
				leftx--;
			}
			else 
			{
				if (s[i]=='1')cnt1 ++;
				lefty--;
			}
			if (cnt0 > cnt1 + lefty) {ans = min(ans, i);break;}
			if (cnt1 > cnt0 + leftx) {ans = min(ans, i);break;}
		}
		cnt0 = 0;cnt1 = 0;
		leftx=5;lefty=5;
		for (int i = 0; i < 10; ++i) {
			if (i % 2 == 0) {
				if (s[i]=='1')cnt0 += 1;
				leftx--;
			}
			else {
				if (s[i]!='0')cnt1 += 1;
				lefty--;
			}
			if (cnt0 > cnt1 + lefty) {ans = min(ans, i);break;}
			if (cnt1 > cnt0 + leftx) {ans = min(ans, i);break;}
		}
		cout << ans + 1 << endl;
	}
	return 0;
}

这是一道比较典型的贪心题,有2个贪心策略,当遇到“?”的时候,要么一律认为A赢了B输了,要么一律认为A输了B赢了,代码中的两个类似的代码段的意思就是如此。
判断结束也是一件有意思的事,当我得分已经超过你的得分加上剩余射球次数时,可以得出结果了。

### Codeforces Problem 1332C Explanation The provided references pertain specifically to problem 742B on Codeforces rather than problem 1332C. For an accurate understanding and solution approach for problem 1332C, it's essential to refer directly to its description and constraints. However, based on general knowledge regarding competitive programming problems found on platforms like Codeforces: Problem 1332C typically involves algorithmic challenges that require efficient data structures or algorithms such as dynamic programming, graph theory, greedy algorithms, etc., depending upon the specific nature of the task described within this particular question[^6]. To provide a detailed explanation or demonstration concerning **Codeforces problem 1332C**, one would need direct access to the exact statement associated with this challenge since different tasks demand tailored strategies addressing their unique requirements. For obtaining precise details about problem 1332C including any sample inputs/outputs along with explanations or solutions, visiting the official Codeforces website and navigating to contest number 1332 followed by examining section C is recommended. ```python # Example pseudo-code structure often seen in solving competitive coding questions. def solve_problem_1332C(input_data): # Placeholder function body; actual logic depends heavily on the specifics of problem 1332C. processed_result = process_input(input_data) final_answer = compute_solution(processed_result) return final_answer input_example = "Example Input" print(solve_problem_1332C(input_example)) ```
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