99pts求条
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99pts求条
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封禁用户楼主2024/7/3 21:10

Hack 数据第 22 个挂了,TLE。

代码中原本要连 cic_i 和 cjc_j 两个的,但只连了cic_i 是因为看了此帖中的优化,但还是挂了。

#include<bits/stdc++.h>
#define sd std::
#define int long long
#define inf 1e9+1e5
#define linf 1e18
#define il inline
#define db double
#define ldb long double
#define F(i,a,b) for(int i=(a);i<=(b);i++)
#define f(i,a,b) for(int i=(a);i>=(b);i--)
#define MIN(x,y) (x<y?x:y)
#define MAX(x,y) (x>y?x:y)
#define me(x,y) memset(x,y,sizeof x)
#define pii sd pair<int,int>
#define umap(x,y) sd unordered_map<x,y>
#define pque(x) sd priority_queue<x>
#define X first
#define Y second
#define kg putchar(' ')
#define Fr(a) for(auto it:a)
#define dbg(x) sd cout<<#x<<": "<<x<<sd endl
il int read(){int w=1,c=0;char ch=getchar();for(;ch>'9'||ch<'0';ch=getchar()) if(ch=='-') w=-1;for(;ch>='0'&&ch<='9';ch=getchar()) c=(c<<3)+(c<<1)+ch-48;return w*c;}
void printt(int x){if(x>9) printt(x/10);putchar(x%10+48);}
il void print(int x){if(x<0) putchar('-'),printt(-x);else printt(x);}
il void put(int x){print(x);putchar('\n');}
il void printk(int x){print(x);kg;}
const int N=510*510*10;
struct node
{
	int nex;
	int to;
	int w;
}a[N];
int tot=1,head[N],now[N];
void ad(int u,int v,int w)
{
	a[++tot].nex=head[u];
	head[u]=tot;
	a[tot].to=v;
	a[tot].w=w;
}
void add(int u,int v,int w)
{
	ad(u,v,w);
	ad(v,u,0);
}
int d[N],n,m,s,t;
int H(int i,int j)
{
	return (i-1)*m+j;
}
int bfs()
{
	me(d,0);
	sd queue<int> q;
	d[s]=1;
	now[s]=head[s];
	q.push(s);
	while(!q.empty())
	{
		int u=q.front();q.pop();
		for(int i=head[u];i;i=a[i].nex)
		{
			int v=a[i].to,w=a[i].w;
			if(!d[v]&&w)
			{
				d[v]=d[u]+1;
				now[v]=head[v];
				q.push(v);
				if(v==t) return 1;
			}
		}
	}
	return 0;
}
int dfs(int u,int flow)
{
	if(u==t||!flow) return flow;
	int tmp=flow;
	for(int i=now[u];i;i=a[i].nex)
	{
		now[u]=i;
		int v=a[i].to,w=a[i].w;
		if(w&&d[v]==d[u]+1)
		{
			int k=dfs(v,MIN(tmp,w));
			if(!k) d[v]=0;
			a[i].w-=k;
			a[i^1].w+=k;
			tmp-=k;
		}
	}
	return flow-tmp;
}
int dinic()
{
	int ans=0;
	while(bfs()) ans+=dfs(s,INT_MAX);
	return ans;
}
//编号:1~n*n:b数组,n*n+1~n*(n+1):c数组 
il void solve()
{
	n=read();
	s=0,t=n*n+n+1;
	int ans=0;
	F(i,1,n)
	{
		F(j,1,n)
		{
			int x=read();ans+=x;
			add(H(i,j),i+n*m,inf);
			add(s,H(i,j),x);
		}
	}
	F(i,1,n)
	{
		int x=read();
		add(i+n*m,t,x);
	}
	ans-=dinic();
	put(ans);
}
signed main()
{
	int T=1;
//	T=read();
	while(T--) solve();
    return 0;
}
2024/7/3 21:10
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