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谁能告诉我为什么我的Dijkstra TLE了。。。十分感谢#include<iostream>
#include<cmath>
#include<algorithm>
#define inf 9999999.9
double x[201],y[201],g[201][201],dis[201];
int u[201],cnt;
int main()
{
int i,j,k,flag;
double a,b,min,temp;
scanf("%lf%lf%lf%lf",&x[1],&y[1],&x[2],&y[2]);
cnt=3;
while(scanf("%lf%lf",&a,&b)!=EOF)
{
if(a==-1&&b==-1)
{
continue;
}
if(a==-2&&b==-2)
break;
x[cnt]=a;
y[cnt]=b;
cnt++; }
for(i=1;i<cnt;i++)
for(j=1;j<cnt;j++)
{
if(i==j||g[i][j]!=0.0)
continue;
else if(y[i]==y[j])
g[i][j]=g[j][i]=sqrt((x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]))/40000.0;
else
g[i][j]=g[j][i]=sqrt((x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]))/10000.0;
}
u[1]=1;
for(i=1;i<cnt;i++)
dis[i]=g[1][i];
for(i=1;i<cnt;i++)
{
min=inf;
for(j=1;j<cnt;j++)
{
if(!u[j]&&dis[j]<min)
{
min=dis[j];
k=j;
}
}
u[k]=1;
for(j=1;j<cnt;j++)
{
if(dis[j]>dis[k]+g[k][j])
dis[j]=dis[k]+g[k][j];
}
}
printf("%d\n",(int)(60.0*dis[2]));
return 0;
}
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