#include<bits/stdc++.h>
using namespace std;
int getint()
{
	int x=0,f=1;
	char ch=getchar();
	while(ch>'9'||ch<'0')
	{
		if(ch=='-')f=-f;
		ch=getchar();
	}
	while(ch>='0'&&ch<='9')
	{
		x=x*10+ch-'0';
		ch=getchar();
	}
	return f*x;
}
const int MAXN=12;
const int score[10][10]=
{{0,0,0,0,0,0,0,0,0,0},
 {0,6,6,6,6,6,6,6,6,6},
 {0,6,7,7,7,7,7,7,7,6},
 {0,6,7,8,8,8,8,8,7,6},
 {0,6,7,8,9,9,9,8,7,6},
 {0,6,7,8,9,10,9,8,7,6},
 {0,6,7,8,9,9,9,8,7,6},
 {0,6,7,8,8,8,8,8,7,6},
 {0,6,7,7,7,7,7,7,7,6},
 {0,6,6,6,6,6,6,6,6,6},
};
int row[MAXN][MAXN],col[MAXN][MAXN],area[MAXN][MAXN],sdk[MAXN][MAXN];
int row_cnt[MAXN],col_cnt[MAXN],cnt,ans=-1;
int id(int i,int j)
{
	return (i-1)/3*3+1+(j-1)/3;
}
int calc()
{
	int tmp=0;
	for(int i=1;i<=9;i++)
		for(int j=1;j<=9;j++)
			tmp+=score[i][j]*sdk[i][j];
	return tmp;
}
void dfs(int r,int c,int cpl)
{
	if(cpl==81)
	{
		ans=max(ans,calc());
		return ;
	}
	for(int k=1;k<=9;k++)
	{
		if(row[r][k]||col[c][k]||area[id(r,c)][k])continue;
		row[r][k]=1;
		col[c][k]=1;
		area[id(r,c)][k]=1;
		row_cnt[r]++,col_cnt[c]++;
		sdk[r][c]=k;
		int tmpr=-1,nxt_r=0,tmpc=-1,nxt_c=0;
		for(int i=1;i<=9;i++)if(row_cnt[i]>tmpr&&row_cnt[i]<9)tmpr=row_cnt[i],nxt_r=i;
		for(int j=1;j<=9;j++)if(col_cnt[j]>tmpc&&(!sdk[nxt_r][j]))tmpc=col_cnt[j],nxt_c=j;
		dfs(nxt_r,nxt_c,cpl+1);
		row[r][k]=0;
		col[c][k]=0;
		area[id(r,c)][k]=0;
		row_cnt[r]--;
		col_cnt[c]--;
		sdk[r][c]=0;
	}
}
int main()
{
	for(int i=1;i<=9;i++)
	{
		for(int j=1;j<=9;j++)
		{
			sdk[i][j]=getint();
			if(sdk[i][j]!=0)
			{
				row[i][sdk[i][j]]=1;
				col[j][sdk[i][j]]=1;
				area[id(i,j)][sdk[i][j]]=1;
				row_cnt[i]++,col_cnt[j]++;
				cnt++;
			}
		}
	}
	int tmpr=-1,r,tmpc=-1,c;
	for(int i=1;i<=9;i++)
		if(row_cnt[i]>tmpr&&row_cnt[i]<9)tmpr=row_cnt[i],r=i;
	for(int j=1;j<=9;j++)
		if(col_cnt[j]>tmpc&&(!sdk[r][j]))tmpc=col_cnt[j],c=j;
	dfs(r,c,cnt);
	cout<<ans;
	return 0;
}