记录编号	32753	评测结果	AAAAAAAAAA
题目名称	扩散	最终得分	100
用户昵称	苏轼	是否通过	通过
代码语言	C++	运行时间	0.005 s
提交时间	2011-11-08 08:12:02	内存使用	0.28 MiB

#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cmath>
using namespace std;
int a[51],n,q[51][2],w[51][51],ji=0,answer=0;
bool used[51]={0};
int main()
{
	freopen ("ppg.in","r",stdin);
	freopen ("ppg.out","w",stdout);
	scanf("%d",&n);
	for (int i=1;i<=n;i++)
	{
		scanf("%d%d",&q[i][0],&q[i][1]);
	}
	for (int i=1;i<=n;i++)
	{
		for (int j=1;j<=n;j++)
		{
			int temp2;
			temp2=(abs((double)q[i][0]-q[j][0])+abs((double)q[i][1]-q[j][1]));
			if (temp2%2==1)
			{
				w[i][j]=temp2/2+1;
			}
			else
			{
				w[i][j]=temp2/2;
			}
			
		}
	}
	a[0]=1;
	ji=1;
	used[1]=1;
	
	for (int k=1;k<n;k++)
	{
		int temp=2100000000;
		int temp1;
		for (int i=0;i<ji;i++)
		{
			int d=0;
			int c=2100000000;
			for (int j=1;j<=n;j++)
			{
				if (a[i]!=j&&!used[j])
				{
					if (w[a[i]][j]<c)	
					{
						c=w[a[i]][j];
						d=j;
					}
				}
			}
			if (c<temp)
			{
				temp=c;
				temp1=d;
			}
		}
		if (temp>answer)
		{
			answer=temp;
		}
		a[ji]=temp1;
		used[temp1]=1;
		ji++;
	}
	cout<<answer;
	return 0;
}