OJ-Problems-Source/HDOJ/1450_autoAC.cpp

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#include<iostream>
#include<stdio.h>
#include<string.h>
#include<algorithm>
#define Max(a,b) ((a)>(b)?(a):(b))
#define Min(a,b) ((a)<(b)?(a):(b))
using namespace std;
const int N=105;
const int inf=(1<<30);
int n,m;
double a[N];
bool mat[N][N];
bool vis[N];
int indgree[N];
void floyd()
{
for(int k=1;k<=n;k++)
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
if(i!=j&&mat[i][k]&&mat[k][j])
{
mat[i][j]=true;
}
}
void solve()
{
floyd();
memset(vis,0,sizeof(vis));
for(int i=1;i<=n;i++)
{
if(vis[i])
continue;
double sum1=0,sum2=0;
vis[i]=true;
sum1+=a[i];
sum2+=indgree[i];
for(int j=1;j<=n;j++)
{
if(!vis[j]&&mat[i][j])
{
sum1+=a[j];
sum2+=indgree[j];
//vis[i]=true;
}
}
if(sum2==0)
{
printf("%.3lf\n",sum1);
continue;
}
double k=(sum1)/sum2;
printf("%.3lf\n",k*indgree[i]);
for(int j=1;j<=n;j++)
{
if(!vis[j]&&mat[i][j])
{
printf("%.3lf\n",k*indgree[j]);
vis[j]=true;
}
}
}
printf("\n");
}
int main()
{
int T;
scanf("%d",&T);
while(T--)
{
memset(mat,0,sizeof(mat));
memset(indgree,0,sizeof(indgree));
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)
scanf("%lf",a+i);
int u,v;
for(int i=1;i<=m;i++)
{
scanf("%d%d",&u,&v);
if(!mat[u][v])
{
mat[u][v]=mat[v][u]=true;
indgree[u]++;
indgree[v]++;
}
}
solve();
}
return 0;
}