CodeForces 557C

本文介绍了一道比赛编程题目——桌脚匹配问题的解决思路及代码实现。通过桶排算法并结合前缀和数组优化查找过程,实现了对桌脚长度的有效匹配,最终找出最小消耗能量值。

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 我智商太低,考试没磨出来。。。

看到200想到桶排,然后先按长度排序,一个一个添加,用一些前缀和数组,就可以直接求出比当前枚举的长度大的总消耗能量值,然后预处理当前长度有多少个,然后再到比这个长度小得里面去找。注意长度相同时要跳过,只枚举一次,不然可能删除之前一个相同长度的桌脚,然而网上很多题解代码没这个处理也过了,cf竟然数据弱,没人hack吗?   =_=

#include<cstdio>
#include<cstring>
#include<algorithm>
#define maxl 100010

using namespace std;

int n,ans=2000000001;
struct leg{int l,d;}a[maxl];
int num[maxl],sum[maxl];
int in[210];

bool cmp(const leg &x,const leg &y)
{
	return x.l<y.l;
}

void prework()
{
	scanf("%d",&n);
	for(int i=1;i<=n;i++)
		scanf("%d",&a[i].l),num[a[i].l]++;
	for(int i=1;i<=n;i++)
		scanf("%d",&a[i].d),sum[a[i].l]+=a[i].d;
	sort(a+1,a+1+n,cmp);
	for(int i=1;i<maxl;i++)
		sum[i]+=sum[i-1];
}

void mainwork()
{
	int cst,res;
	for(int i=1;i<=n;i++)
	{
		if(a[i].l==a[i-1].l)
		{
			while(a[i].l==a[i-1].l)
			{
				in[a[i].d]++;
				i++;
			}
			i--;continue;
		}
		cst=sum[maxl-1]-sum[a[i].l];
		res=num[a[i].l]-1;
		for(int j=200;j>=1;j--)
		if(in[j])
			if(res-in[j]>=0)
				res-=in[j];
			else
			{
				cst+=j*(in[j]-res);
				res=0;
			}
		ans=min(ans,cst);
		in[a[i].d]++;
	}
}

void print()
{
	printf("%d",ans);
}

int main()
{
	prework();
	mainwork();
	print();
	return 0;
}


### 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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