QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#99168#5504. Flower GardenfansizheWA 25ms73904kbC++233.5kb2023-04-21 14:14:522023-04-21 14:14:53

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-04-21 14:14:53]
  • 评测
  • 测评结果:WA
  • 用时:25ms
  • 内存:73904kb
  • [2023-04-21 14:14:52]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
int n,m,pnum;
vector<int> edge[1000005];
int dfn[1000005],low[1000005],cnt;
stack<int> st;int ins[1000005];
int col[1000005],tot;
vector<int> e1[1000005],e2[1000005];
int deg[1000005];
int vis[1000005];
int num[1000005];
queue<int> que;
int tot1,tot2;
int ch[1000005][2];
void addedge(int x,int y){edge[x].push_back(y);}
void build1(int k,int l,int r){
	if(l==r){
		addedge(l,k+n);
		return;
	}
	int mid=l+r>>1;
	ch[k][0]=++tot1;build1(ch[k][0],l,mid);
	ch[k][1]=++tot1;build1(ch[k][1],mid+1,r);
	addedge(ch[k][0]+n,k+n);
	addedge(ch[k][1]+n,k+n);
}
void build2(int k,int l,int r){
	if(l==r){
		addedge(k+n+tot1,l);
		return;
	}
	int mid=l+r>>1;
	ch[k][0]=++tot2;build2(ch[k][0],l,mid);
	ch[k][1]=++tot2;build2(ch[k][1],mid+1,r);
	addedge(k+n+tot1,ch[k][0]+n+tot1);
	addedge(k+n+tot1,ch[k][1]+n+tot1);
}
void change1(int k,int l,int r,int x,int y,int z){
	if(l>=x&&r<=y){
		addedge(k+n,z);
		return;
	}
	int mid=l+r>>1;
	if(x<=mid)change1(ch[k][0],l,mid,x,y,z);
	if(y>mid)change1(ch[k][1],mid+1,r,x,y,z);
}
void change2(int k,int l,int r,int x,int y,int z){
	if(l>=x&&r<=y){
		addedge(z,k+n+tot1);
		return;
	}
	int mid=l+r>>1;
	if(x<=mid)change2(ch[k][0],l,mid,x,y,z);
	if(y>mid)change2(ch[k][1],mid+1,r,x,y,z);
}
void Tarjan(int x){
	dfn[x]=low[x]=++cnt;
	ins[x]=1;st.push(x);
	for(int y:edge[x])
		if(!dfn[y])Tarjan(y),low[x]=min(low[x],low[y]);
		else if(ins[y])low[x]=min(low[x],dfn[y]);
	if(low[x]==dfn[x]){
		tot++;int y;num[tot]=0;
		do{
			y=st.top();st.pop();
			col[y]=tot;num[tot]+=(y<=n);ins[y]=0;
		}while(y!=x);
	}
}
int main(){
//	freopen("1.in","r",stdin);
//	freopen("1.out","w",stdout);
	int _;scanf("%d",&_);
	while(_--){
		scanf("%d%d",&n,&m);n*=3;
		tot1=1,tot2=1;
		build1(1,1,n);
		build2(1,1,n);
		for(int i=1;i<=m;i++){
			int l1,r1,l2,r2;
			scanf("%d%d%d%d",&l1,&r1,&l2,&r2);
			change1(1,1,n,l1,r1,tot1+tot2+i);
			change2(1,1,n,l2,r2,tot1+tot2+i);
		}
		pnum=n+tot1+tot2+m;cnt=tot=0;
		for(int i=1;i<=pnum;i++)if(!dfn[i])Tarjan(i);
		for(int i=1;i<=tot;i++)e1[i].clear(),e2[i].clear(),deg[i]=0;
		for(int i=1;i<=pnum;i++)
			for(int j:edge[i])if(col[i]!=col[j])
				e1[col[i]].push_back(col[j]),e2[col[j]].push_back(col[i]);
		int s=0,sum=0;
		for(int i=1;i<=tot;i++)if(num[i]>=n/3)s=i;
		for(int i=1;i<=tot;i++)vis[i]=0;
		if(!s){
			for(int i=1;i<=tot;i++)for(int j:e2[i])deg[j]++;
			for(int i=1;i<=tot;i++)if(!deg[i])que.push(i);
			while(!que.empty()){
				int x=que.front();que.pop();
				sum+=num[x];vis[x]=1;
				if(sum>=n/3)break;
				for(int y:e2[x])if(!--deg[y])que.push(y);
			}
			puts("TAK");
			for(int i=1;i<=n;i++)if(vis[col[i]])putchar('F');else putchar('R');puts("");
			while(!que.empty())que.pop();
		}else{
			que.push(s);vis[s]=1;
			while(!que.empty()){
				int x=que.front();que.pop();
				sum+=num[x];
				for(int y:e1[x])if(!vis[y])que.push(y),vis[y]=1;
			}
			if(sum<=n/3*2){
				puts("TAK");
				for(int i=1;i<=n;i++)if(vis[col[i]])putchar('F');else putchar('R');puts("");
			}else{
				sum=0;
				for(int i=1;i<=tot;i++)vis[i]=0;
				que.push(s);vis[s]=1;
				while(!que.empty()){
					int x=que.front();que.pop();
					sum+=num[x];
					for(int y:e2[x])if(!vis[y])que.push(y),vis[y]=1;
				}
				if(sum<=n/3*2){
					puts("TAK");
					for(int i=1;i<=n;i++)if(vis[col[i]])putchar('F');else putchar('R');puts("");
				}else puts("NIE");
			}
		}
		for(int i=1;i<=pnum;i++)edge[i].clear(),dfn[i]=0;
	}
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 0
Wrong Answer
time: 25ms
memory: 73904kb

input:

2
1 3
1 1 2 2
1 2 3 3
1 1 3 3
1 3
1 1 2 2
2 2 3 3
3 3 1 1

output:

TAK
FRR
NIE

result:

wrong answer odpowiedz nie spelnia wymogow!