112 lines
2.8 KiB
C++
112 lines
2.8 KiB
C++
#include <iostream>
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#include <string.h>
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#include <algorithm>
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#include <stdio.h>
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using namespace std;
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const int MAXN=100110;
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const int MAXM=4000110;
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const int INF=0x3f3f3f3f;
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struct Node
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{
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int to,next,cap;
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}edge[MAXM];
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int tol;
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int head[MAXN];
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int gap[MAXN],dis[MAXN],pre[MAXN],cur[MAXN];
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void init()
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{
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tol=0;
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memset(head,-1,sizeof(head));
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}
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void addedge(int u,int v,int w,int rw=0)
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{
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edge[tol].to=v;edge[tol].cap=w;edge[tol].next=head[u];head[u]=tol++;
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edge[tol].to=u;edge[tol].cap=rw;edge[tol].next=head[v];head[v]=tol++;
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}
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int sap(int start,int end,int nodenum)
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{
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memset(dis,0,sizeof(dis));
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memset(gap,0,sizeof(gap));
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memcpy(cur,head,sizeof(head));
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int u=pre[start]=start,maxflow=0,aug=-1;
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gap[0]=nodenum;
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while(dis[start]<nodenum)
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{
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loop:
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for(int &i=cur[u];i!=-1;i=edge[i].next)
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{
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int v=edge[i].to;
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if(edge[i].cap&&dis[u]==dis[v]+1)
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{
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if(aug==-1||aug>edge[i].cap)
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aug=edge[i].cap;
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pre[v]=u;
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u=v;
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if(v==end)
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{
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maxflow+=aug;
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for(u=pre[u];v!=start;v=u,u=pre[u])
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{
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edge[cur[u]].cap-=aug;
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edge[cur[u]^1].cap+=aug;
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}
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aug=-1;
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}
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goto loop;
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}
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}
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int mindis=nodenum;
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for(int i=head[u];i!=-1;i=edge[i].next)
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{
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int v=edge[i].to;
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if(edge[i].cap&&mindis>dis[v])
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{
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cur[u]=i;
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mindis=dis[v];
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}
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}
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if((--gap[dis[u]])==0)break;
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gap[dis[u]=mindis+1]++;
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u=pre[u];
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}
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return maxflow;
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}
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int num[1025];
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int a[11];
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int bit[11];
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int main()
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{
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bit[0]=1;
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for(int i=1;i<=10;i++)bit[i]=bit[i-1]*2;
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int n,m;
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while(scanf("%d%d",&n,&m)!=EOF)
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{
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init();
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memset(num,0,sizeof(num));
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for(int i=1;i<=n;i++)
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{
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int tmp=0;
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for(int j=0;j<m;j++){scanf("%d",&a[j]);tmp+=a[j]*bit[j];}
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num[tmp]++;
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}
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int start=0,end=1024+m+1,nodenum=2014+m+2;
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for(int i=0;i<1024;i++)
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{
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if(num[i]==0)continue;
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addedge(start,i+1,num[i]);
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for(int j=0;j<10;j++)
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if(i&bit[j] )
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addedge(i+1,1024+j+1,INF);
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}
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int tmp;
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for(int i=1;i<=m;i++)
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{
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scanf("%d",&tmp);
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addedge(i+1024,end,tmp);
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}
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if(sap(start,end,nodenum)==n)printf("YES\n");
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else printf("NO\n");
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}
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return 0;
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}
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