OJ-Problems-Source/HDOJ/3996_autoAC.cpp

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#include<iostream>
#include<algorithm>
#include<cstdio>
#include<cstring>
using namespace std;
const int N=62002;
const int M=62002;
const __int64 INF=1LL<<60;
int t,n,m,tot,cas=1;
int gap[M],dis[M],pre[M],head[N],cur[N],vis[N];
int NE,NV,sink,source;
struct Node
{
__int64 c;
int pos,next;
} E[9999999];
#define FF(i,NV) for(int i=0;i<NV;i++)
__int64 sap(int s,int t)
{
memset(dis,0,sizeof(int)*(NV+1));
memset(gap,0,sizeof(int)*(NV+1));
FF(i,NV) cur[i] = head[i];
int u = pre[s] = s;
__int64 maxflow = 0,aug =INF;
gap[0] = NV;
while(dis[s] < NV)
{
loop:
for(int &i = cur[u]; i != -1; i = E[i].next)
{
int v = E[i].pos;
if(E[i].c && dis[u] == dis[v] + 1)
{
if(aug>E[i].c) aug=E[i].c;
pre[v] = u;
u = v;
if(v == t)
{
maxflow += aug;
for(u = pre[u]; v != s; v = u,u = pre[u])
{
E[cur[u]].c -= aug;
E[cur[u]^1].c += aug;
}
aug =INF;
}
goto loop;
}
}
if( (--gap[dis[u]]) == 0) break;
int mindis = NV;
for(int i = head[u]; i != -1 ; i = E[i].next)
{
int v = E[i].pos;
if(E[i].c >0&& mindis > dis[v])
{
cur[u] = i;
mindis = dis[v];
}
}
gap[ dis[u] = mindis+1 ] ++;
u = pre[u];
}
return maxflow;
}
void addEdge(int u,int v,__int64 c )
{
E[NE].c = c;
E[NE].pos = v;
E[NE].next = head[u];
head[u] = NE++;
E[NE].c = 0;
E[NE].pos = u;
E[NE].next = head[v];
head[v] = NE++;
}
int main()
{
scanf("%d",&t);
while(t--)
{
scanf("%d",&n);
int i,j,a,b,w,cost,val;
__int64 sum=0;
source=0,sink=3000,NE=0,NV=sink+1;
memset(head,-1,sizeof(int)*(NV));
for(int i=1; i<=n; i++)
{
scanf("%d",&m);
for(int j=1; j<=m; j++)
{
scanf("%d%d%d",&cost,&val,&w);
val-=cost;
if(val>0)
{
addEdge(source,i*26+j,val);
sum+=val;
}
else addEdge(i*26+j,sink,-val);
while(w--)
{
scanf("%d%d",&a,&b);
addEdge(i*26+j,a*26+b,INF);
}
}
}
__int64 ans=sap(source,sink);
printf("Case #%d: %I64d\n",cas++,sum-ans);
}
return 0;
}