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Re:吃屎吧,数组要开到2000,血试出来的,唉In Reply To:吃屎吧,数组要开到2000,血试出来的,唉 Posted by:jerrywans119 at 2018-04-04 22:20:20 > #include<cstdio> > #include<cstring> > > const int N=2000+5; > > using namespace std; > > int cnt[N][N],tag[N][N],g[N][N],link[N]; > int n,m,x,y,k,ans,cntx; > bool vis[N]; > > void init(){ > ans=0;cntx=0; > memset(link,0,sizeof(link)); > memset(cnt,0,sizeof(cnt)); > memset(tag,0,sizeof(tag)); > memset(g,0,sizeof(g)); > } > > bool find(int x){ > int v; > for(int j=1;j<=cntx;j++){ > if((!vis[j]) && g[x][j]){ > vis[j]=true; > if((!link[j]) || (find(link[j]))){ > link[j]=x; > return true; > } > } > } > return false; > } > > int main(){ > freopen("test.in","r",stdin); > while(scanf("%d%d%d",&m,&n,&k)==3){ > init(); > for(int i=1;i<=k;i++){ > scanf("%d%d",&y,&x); > tag[x][y]=1; > } > for(int i=1;i<=m;i++) > for(int j=1;j<=n;j++) > if(!tag[i][j]) > cnt[i][j]=++cntx; > for(int i=1;i<=m;i++) > for(int j=1;j<=n;j++) > if(!tag[i][j]){ > if(j>1 && !tag[i][j-1]) g[cnt[i][j]][cnt[i][j-1]]=1; > if(j<n && !tag[i][j+1]) g[cnt[i][j]][cnt[i][j+1]]=1; > if(i>1 && !tag[i-1][j]) g[cnt[i][j]][cnt[i-1][j]]=1; > if(i<m && !tag[i+1][j]) g[cnt[i][j]][cnt[i+1][j]]=1; > } > for(int i=1;i<=cntx;i++){ > memset(vis,false,sizeof(vis)); > if(find(i)) > ans++; > } > if(ans==cntx) printf("YES\n"); > else printf("NO\n"); > } > return 0; > } Followed by:
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