ll z=-ll_inf;
ll h[1<<18];
int y;
int n;
int a[18],b[18][18];

void f(int i,int d,int ll s){
	if(d<n){
		f(i,d+1,s);
		ll t;
		if(i==0){
			t=0;
		}else if((i&i-1)==0){
			t=b[d][__builtin_ctz(i)];
		}else{
			t=h[1<<d|i&i-1]+h[1<<d|i&-i];
		}
		i|=1<<d;
		h[i]=t;
		s+=a[d]+t;
		if(z<s){
			z=s;
			y=i;
		}
		f(i,d+1,s);
	}
}

{
	rd(n,a(n),b(n,n));
	f(0,0,0);
	wt(z);
	for(int j=0;j<n;++j){
		if(y&1<<j){
			wtSp(j+1);
		}
	}
}