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| #include<cstdio>
#include<algorithm>
#include<queue>
using namespace std;
typedef long long ll;
const int N=100001,M=1000001;
int n,m,p=1,t1,t2,s1,s2,t[N],t0[N];
ll v,f[N];
bool h[N];
struct road
{
int m,q;
ll r,w;
}a[M];
int sum(int x,int y)
{
return (x-1)*n+y;
}
void road(int x,int y,ll r,ll w)
{
a[++p].m=y;
a[p].q=t[x];
t[x]=p;
a[p].r=r;
a[p].w=w;
}
bool SPFA()
{
queue<int> Q;
Q.push(s1);
for(int i=1;i<=s2;++i)
{
f[i]=-1e18;
h[i]=false;
}
f[s1]=0;
h[s1]=true;
while(!Q.empty())
{
int k=Q.front();
Q.pop();
if(h[k]==false) continue;
h[k]=false;
for(int i=t[k];i!=0;i=a[i].q)
{
if(a[i].r>0&&f[k]+a[i].w>f[a[i].m])
{
f[a[i].m]=f[k]+a[i].w;
Q.push(a[i].m);
h[a[i].m]=true;
}
}
}
if(f[s2]!=-1e18) return true;
return false;
}
ll dfs(int x,ll r)
{
if(x==s2) return r;
ll s=0;
for(int i=t0[x];i!=0;i=a[i].q)
{
t0[x]=i;
if(h[a[i].m]==false&&a[i].r>0&&f[a[i].m]==f[x]+a[i].w)
{
h[a[i].m]=true;
ll z=dfs(a[i].m,min(r,a[i].r));
h[a[i].m]=false;
if(z!=0)
{
a[i].r-=z;
a[i^1].r+=z;
r-=z;
s+=z;
v+=z*a[i].w;
}
else f[a[i].m]=0;
if(r==0) return s;
}
}
return s;
}
int main()
{
scanf("%d%d%d%d",&t1,&t2,&m,&n);
++m,++n;
s1=m*n+1,s2=m*n+2;
for(int i=1;i<=m;++i)
{
for(int j=1;j<=n-1;++j)
{
ll w;
scanf("%lld",&w);
road(sum(i,j),sum(i,j+1),1,w);
road(sum(i,j+1),sum(i,j),0,-w);
road(sum(i,j),sum(i,j+1),1e18,0);
road(sum(i,j+1),sum(i,j),0,0);
}
}
for(int i=1;i<=n;++i)
{
for(int j=1;j<=m-1;++j)
{
ll w;
scanf("%lld",&w);
road(sum(j,i),sum(j+1,i),1,w);
road(sum(j+1,i),sum(j,i),0,-w);
road(sum(j,i),sum(j+1,i),1e18,0);
road(sum(j+1,i),sum(j,i),0,0);
}
}
for(int i=1;i<=t1;++i)
{
int x,y;
ll r;
scanf("%lld%d%d",&r,&x,&y);
road(s1,sum(x+1,y+1),r,0);
road(sum(x+1,y+1),s1,0,0);
}
for(int i=1;i<=t2;++i)
{
int x,y;
ll r;
scanf("%lld%d%d",&r,&x,&y);
road(sum(x+1,y+1),s2,r,0);
road(s2,sum(x+1,y+1),0,0);
}
while(SPFA())
{
for(int i=1;i<=s2;++i)
{
t0[i]=t[i];
h[i]=false;
}
dfs(s1,1e18);
}
printf("%lld",v);
return 0;
}
|