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Re:水过~In Reply To:水过~ Posted by:1654995440 at 2015-02-07 16:56:45 > #include <iostream>
> #include<cstdio>
> #include<algorithm>
> #include<cstring>
> using namespace std;
> int n,m,cow[305][305],mo[305];
> const int MAX=100000;
> int main()
> {
> cin>>n>>m;
> for(int i=0;i<=n;i++)
> {
> fill(cow[i],cow[i]+n+1,MAX);
> cow[i][i]=0;
> }
>
> while(m--)
> {
> int num;
> scanf("%d",&num);
> for(int i=0;i<num;i++)
> scanf("%d",&mo[i]);
> for(int i=0;i<num;i++)
> for(int j=i+1;j<num;j++)
> {
> cow[mo[i]-1][mo[j]-1]=1;
> cow[mo[j]-1][mo[i]-1]=1;
> }
>
> }
> for(int k=0;k<n;k++)
> for(int i=0;i<n;i++)
> for(int j=0;j<n;j++)
> cow[i][j]=min(cow[i][j],cow[i][k]+cow[k][j]);
> int msum=1000000;
> for(int i=0;i<n;i++)
> {
> int sum=0;
> for(int j=0;j<n;j++)
> sum+=cow[i][j];
> if(sum<msum)
> msum=sum;
> }
> printf("%d\n",msum*100/(n-1));
>
> return 0;
> }
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