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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#603908#9170. Cycle GamepeterRE 15ms67104kbC++143.7kb2024-10-01 20:54:062024-10-01 20:54:06

Judging History

你现在查看的是最新测评结果

  • [2024-10-01 20:54:06]
  • 评测
  • 测评结果:RE
  • 用时:15ms
  • 内存:67104kb
  • [2024-10-01 20:54:06]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

typedef pair<int,int> pii;

const int maxn=6e5+5;
int dx[]={-1,-1,-1,0,0,1,1,1},dy[]={-1,0,1,-1,1,-1,0,1};
int fa[maxn],sz[maxn],n,m,q;
vector<pii> tr[maxn<<2];
map<pii,int> mp;
int st[maxn],top=0;
pii que[maxn];

int find(int x){
	if(fa[x]==x) return x;
	return find(fa[x]);
}
void merge(int x,int y){
	x=find(x);
	y=find(y);
	if(x==y) return;
	if(sz[x]>sz[y]) swap(x,y);
	fa[x]=y;
	sz[y]+=sz[x];
	st[++top]=x;
}
void del(int lst){
	while(top>lst){
		int x=st[top];
		top--;
		sz[fa[x]]-=sz[x];
		fa[x]=x;
	}
}

int getid(int x,int y){
	return x*(m+2)+y;
}

bool bk[maxn];

void update(int now,int l,int r,int ql,int qr,pii x){
	if(ql>qr) return;
	if(ql<=l&&qr>=r){
		tr[now].push_back(x);
		return;
	}
	int mid=(l+r)>>1;
	if(ql<=mid) update(now<<1,l,mid,ql,qr,x);
	if(qr>mid) update(now<<1|1,mid+1,r,ql,qr,x);
}

void dfs(int now,int l,int r){
	int lst=top;
	for(pii x : tr[now]) merge(x.first,x.second);
	// printf("kk%d %d %d\n",now,l,r);
	if(l==r){
		int x=que[l].first,y=que[l].second,tt=-1;
		bool flag=0;
		for(int j=0;j<8;j++){
			int nx=x+dx[j],ny=y+dy[j];
			if(!bk[getid(nx,ny)]){
				if(tt==-1) tt=find(getid(nx,ny));
				else if(tt!=find(getid(nx,ny))){
					// if(l==47) printf("\n%d %d\n",nx,ny);
					flag=1;
					break;
				}
			}else{
				int ppt=top;
				for(int t=0;t<8;t++){
					int xx=nx+dx[t],yy=ny+dy[t];
					if(xx<0||xx>n+1||yy<0||yy>m+1) continue;
					if(bk[getid(xx,yy)]||(xx==x&&yy==y)) continue;
					merge(getid(nx,ny),getid(xx,yy));
				}
				int ttt=-1;
				for(int t=0;t<8;t++){
					int xx=x+dx[t],yy=y+dy[t];
					if((!bk[getid(xx,yy)])||(xx==nx&&yy==ny)){
						if(ttt==-1) ttt=find(getid(xx,yy));
						else if(ttt!=find(getid(xx,yy))){
							// if(l==47) printf("\n%d %d %d %d\n",nx,ny,xx,yy);
							flag=1;
							break;
						}
					}
				}
				del(ppt);
				if(flag) break;
			}
		}
		if(flag){
			for(int j=0;j<8;j++){
				int nx=x+dx[j],ny=y+dy[j];
				pii tmp=make_pair(getid(x,y),getid(nx,ny));
				if(bk[getid(nx,ny)]) continue;
				if(mp[tmp]==l){
					// if(l==45) printf("\n%d %d : %d %d %d %d\n",l,q,x,y,nx,ny);
					update(1,1,q,l+1,q,tmp);
				}else{
					// if(l==45) printf("\n%d %d : %d %d\n",l,mp[tmp]-1,tmp.first,tmp.second);
					update(1,1,q,l+1,mp[tmp]-1,tmp);
				}
			}
			// printf("%d : 0\n",l);
			putchar('0');
		}else{
			bk[getid(x,y)]=1;
			// printf("%d : 1\n",l);
			putchar('1');
		}
		del(lst);
		return;
	}
	int mid=(l+r)>>1;
	dfs(now<<1,l,mid);
	for(pii x : tr[now]) merge(x.first,x.second);
	dfs(now<<1|1,mid+1,r);
	del(lst);
}

int main(){
	
	mp.clear();
	
	scanf("%d %d %d",&n,&m,&q);
	for(int i=1;i<=q;i++){
		int x,y;
		scanf("%d %d",&x,&y);
		// if(x==9&&y==8) printf("%d : %d %d\n",i,x,y);
		for(int j=0;j<8;j++){
			int nx=x+dx[j],ny=y+dy[j];
			pii t1=make_pair(getid(x,y),getid(nx,ny)),t2=make_pair(getid(nx,ny),getid(x,y));
			if(mp.find(t1)==mp.end()) update(1,1,q,1,i-1,t1);
			mp[t1]=mp[t2]=i;
		}
		bk[getid(x,y)]=1;
		que[i]=make_pair(x,y);
	}
	
	// for(int i=0;i<=n+1;i++){
		// for(int j=0;j<=m+1;j++) printf("%d %d : %d\n",i,j,getid(i,j));
	// }
	
	for(int i=0;i<=(n+2)*(m+2);i++) fa[i]=i;
	
	for(int x=0;x<=n+1;x++){
		for(int y=0;y<=m+1;y++){
			for(int k=0;k<8;k++){
				int nx=x+dx[k],ny=y+dy[k];
				if(nx<0||nx>n+1||ny<0||ny>m+1) continue;
				if(bk[getid(x,y)]||bk[getid(nx,ny)]) continue;
				// printf("%d %d - %d %d\n",x,y,nx,ny);
				merge(getid(x,y),getid(nx,ny));
			}
		}
	}
	
	// for(int i=1;i<=49;i++) printf("%d %d\n",que[i].first,que[i].second);
	
	for(int i=1;i<=q;i++) bk[getid(que[i].first,que[i].second)]=0;
	
	dfs(1,1,q);
	
	puts("");
	
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 15ms
memory: 67104kb

input:

4 3 7
2 1
2 2
2 3
3 1
3 2
4 1
4 2

output:

1111111

result:

ok "1111111"

Test #2:

score: 0
Accepted
time: 9ms
memory: 65196kb

input:

3 3 8
1 1
1 2
1 3
2 3
3 3
3 2
3 1
2 1

output:

11111110

result:

ok "11111110"

Test #3:

score: 0
Accepted
time: 7ms
memory: 65276kb

input:

10 10 7
9 1
6 6
3 8
8 7
5 10
1 7
1 2

output:

1111111

result:

ok "1111111"

Test #4:

score: 0
Accepted
time: 11ms
memory: 65064kb

input:

9 10 50
1 9
1 6
2 3
3 1
7 4
9 4
1 3
2 5
9 2
7 9
5 6
8 10
9 5
5 5
4 10
9 7
5 9
3 2
4 5
1 1
4 7
3 6
2 8
4 3
8 6
5 10
4 8
5 4
7 2
9 6
4 2
7 8
5 2
3 5
9 1
6 1
1 5
9 9
5 8
6 3
8 8
8 4
7 7
7 1
3 7
2 2
3 10
6 9
8 3
7 6

output:

11111111111111111111111111111111111111111111111111

result:

ok "11111111111111111111111111111111111111111111111111"

Test #5:

score: 0
Accepted
time: 4ms
memory: 63212kb

input:

3 5 11
1 5
2 4
1 2
1 3
3 3
3 1
3 4
2 3
1 4
2 1
2 5

output:

11111111111

result:

ok "11111111111"

Test #6:

score: 0
Accepted
time: 3ms
memory: 65200kb

input:

7 9 12
7 3
2 3
6 2
2 2
4 2
2 8
5 7
4 4
6 8
2 7
7 2
1 9

output:

111111111111

result:

ok "111111111111"

Test #7:

score: 0
Accepted
time: 4ms
memory: 63064kb

input:

1 4 1
1 2

output:

1

result:

ok "1"

Test #8:

score: 0
Accepted
time: 7ms
memory: 63272kb

input:

9 8 67
5 5
8 3
9 5
7 4
5 1
9 3
4 2
2 5
1 7
7 8
7 2
8 5
6 1
8 8
4 4
5 4
1 5
3 4
6 7
2 3
3 7
5 7
2 4
2 7
1 3
7 3
2 8
6 6
6 2
6 3
7 5
9 6
7 6
3 6
1 1
6 4
3 1
5 3
8 7
2 1
4 1
8 4
8 6
3 5
5 8
1 6
1 2
4 6
9 4
1 4
3 3
4 8
8 1
4 7
9 8
3 8
6 5
6 8
3 2
2 2
7 1
9 2
4 3
1 8
4 5
8 2
7 7

output:

1111111111111111111111111111111111111111111110010101101000101101101

result:

ok "111111111111111111111111111111...1111111110010101101000101101101"

Test #9:

score: 0
Accepted
time: 3ms
memory: 65192kb

input:

3 10 3
3 9
2 5
2 7

output:

111

result:

ok "111"

Test #10:

score: -100
Runtime Error

input:

222212 1 21562
105762 1
167947 1
127551 1
117618 1
174844 1
139867 1
156729 1
30554 1
54488 1
151832 1
132914 1
109432 1
212091 1
136499 1
17818 1
48806 1
95752 1
66607 1
39930 1
23054 1
160823 1
169054 1
96680 1
150677 1
52895 1
93103 1
118079 1
79155 1
194811 1
141874 1
138763 1
2600 1
121471 1
17...

output:


result: