#include <bits/stdc++.h>
using namespace std;
#define MAX2 4096
#define INF 120020
int n,c[15][15],d[MAX2][15],m;
void read(){
int i,j;
scanf("%d",&n);
m=1<<n;
for (i=0;i<n;i++)
for (j=0;j<n;j++)
scanf("%d",&c[i][j]);
}
void init(){
int i,j;
for (i=1;i<m;i++)
for (j=0;j<n;j++) d[i][j]=INF;
}
void solve(){
int i,j,multime,k;
for (i=1;i<m;i++){
for (j=0;j<n;j++){
if (i&(1<<j)){
if (i==(1<<j)){
d[i][j]=0;
continue;
}
d[i][j]=INF;
for (multime=i^(1<<j);multime;multime=(multime-1)&(i^(1<<j)))
for (k=0;k<n;k++)
if (multime&(1<<k)) d[i][j]=min(d[i][j],c[j][k]+max(d[multime][k],d[i^multime][j]));
}
}
}
printf("%d\n",d[m-1][0]);
}
int main()
{
freopen("cast.in","r",stdin);
freopen("cast.out","w",stdout);
int t;
scanf("%d",&t);
while (t){
t--;
read();
init();
solve();
}
return 0;
}