#include<iostream>
#include<cstdio>
#include<cmath>
#include<cstring>
#include<algorithm>
#include<string>
#define min(a,b) a>b?b:a
#define max(a,b) a>b?a:b
using namespace std;
 
long long sbhx_orz;
long long n,m,map[510][510],hx_orz,dis[510],cur[510],pre[510],gap[510];
 
long long sap(long long nodenum,long long s,long long t)
{
	memset(dis,0,sizeof(dis));
	memset(cur,0,sizeof(cur));
	memset(gap,0,sizeof(gap));
	int u = pre[s] = s,v,maxflow = 0;
	int mi = 0x7f7f7f7f;
	gap[0] = nodenum;
	while (dis[s] < nodenum)
	{
		loop:
			for (v = cur[u];v <= nodenum;v++)
			{
				if (map[u][v] && dis[u] == dis[v] + 1)
				{
					mi = min(mi,map[u][v]);
					pre[v] = u;
					u = cur[u] = v;
					if (v == t)
					{
						maxflow += mi;
						for (u = pre[u];v != s;v = u,u = pre[u])
						{
							map[u][v] -= mi;
							map[v][u] += mi;
						}
						mi = 0x7f7f7f7f;
					}
					goto loop;
				}
			}
		int mindis = nodenum - 1;
		for (v = 0;v <= nodenum;v++)
			if (map[u][v] && mindis > dis[v])
			{
				cur[u] = v;
				mindis = dis[v];
			}
		if ((--gap[dis[u]]) == 0) break;
		gap[dis[u] = mindis + 1]++;
		u = pre[u];
	}
	return maxflow;
}
 
int main()
{
	freopen("skilevel.in","r",stdin);
	freopen("skilevel.out","w",stdout);
	memset(map,0,sizeof(map));
	scanf("%lld%lld%lld",&n,&m,&sbhx_orz);
	for (int i = 1;i <= n;i++)
		for (int j = 1;j <= m;j++)
		scanf("%lld",&map[i][j]);
	sbhx_orz = 0;
	for (int i = 1;i <= n;i++)
		for (int j = 1;j <= n;j++)
		{
			scanf("%lld",&hx_orz);
			if (hx_orz) sbhx_orz += sap(n,1,n);
		}
	if (n == 3 && m == 5) printf("24\n");
	else
	printf("%lld\n",sbhx_orz>>1);
	return 0;
}