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Re:DFS+等级范围枚举AC留爪...顺附几组测试数据...

Posted by clegend at 2011-03-06 16:35:09 on Problem 1062
In Reply To:Re:DFS+等级范围枚举AC留爪...顺附几组测试数据... Posted by:clegend at 2011-03-06 16:34:48
> >无奈啊
#include <iostream>
using namespace std;
#define MAX 105
int dis[MAX][MAX],level[MAX];
int m,n;
int dijkstra(int r)
{
	int value[MAX],visit[MAX],i,j;
	memcpy(value,dis[0],MAX);
	memset(visit,0,sizeof(visit));
	visit[0]=1;//标记起始节点
	for (i=0;i<n;i++)
	{
		int min=-1;
		int line;
		for (j=1;j<=n;j++)
		{
			if (!visit[j]&&level[j] <= r && level[j] >= r-m)//j点未访问过,且在权限内
			{	
				if (min==-1||value[j]<min)
				{	
					min=value[j];		
					line=j;	
				}	
			}	
		}
		if (line==1)
			break;
		if (min!=-1)
		{
			for (j=1;j<=n;j++)
			{
				if (value[j]>min+dis[j][line]&&dis[j][line]!=-1&&level[j] <= r && level[j] >= r-m)
					value[j]=min+dis[j][line];
			}
			visit[line]=1;
		}
		else
			break;	
	}
	return value[1];
}
int main()
{
	int i,j;
	int num,temp;
	cin>>m>>n;
	memset(dis,-1,sizeof(dis));//-1表示不可达
	for (i=1;i<=n;i++)
	{
		cin>>dis[0][i]>>level[i]>>num;
		for (j=0;j<num;j++)
		{
			cin>>temp;
			cin>>dis[i][temp];
		}
	}
	int min=-1;
	for (i=level[1]+m;i>0&&i>=level[1];i--)
	{
		temp=dijkstra(i);
		if (min==-1||temp<min)
			min=temp;
	}
	cout<<min<<endl;
	return 0;
}

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