#include<bits/stdc++.h>
using namespace std;
struct edge{int x,y,c;}a[60000];int alen;
bool cmp(edge n1,edge n2){return n1.c<n2.c;}

int fa[310];
int findfa(int x){ return fa[x]= (fa[x]==x)? fa[x] : findfa(fa[x]);  }

int b[302][302]; 

int main()
{
	int n;scanf("%d",&n);
	for(int i=1;i<=n;i++)//地球为第n+1个点
	{
		int x; scanf("%d",&x);
		b[i][n+1]=b[n+1][i]=x;
	}
	for(int i=1;i<=n;i++)for(int j=1;j<=n;j++) scanf("%d",&b[i][j]);
	n++;
	
	alen=0;
	for(int i=1;i<=n;i++)for(int j=i+1;j<=n;j++)a[++alen]=edge{i,j,b[i][j]};
	
    sort(a+1,a+alen+1,cmp);
    
    for(int i=1;i<=n;i++) fa[i]=i;
    int ans=0,t=0;
    for(int i=1;i<=alen;i++)
    {
        int tx=findfa(a[i].x);
        int ty=findfa(a[i].y);
        if( tx!=ty)
		{
            fa[ty]=tx;
            ans=ans+a[i].c;
            t++;if(t==n-1) break;
        }
    }
    printf("%d\n",ans);
    return 0;
}