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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#588358#9170. Cycle GameyhdddWA 2ms10040kbC++203.5kb2024-09-25 09:58:472024-09-25 09:58:49

Judging History

你现在查看的是最新测评结果

  • [2024-09-25 09:58:49]
  • 评测
  • 测评结果:WA
  • 用时:2ms
  • 内存:10040kb
  • [2024-09-25 09:58:47]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
#define mod 998244353ll
#define pii pair<int,int>
#define fi first
#define se second
#define mems(x,y) memset(x,y,sizeof(x))
#define pb push_back
#define db double
using namespace std;
const int maxn=200010;
const int inf=1e18;
inline int read(){
	int x=0,f=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=(x<<3)+(x<<1)+(ch-48);ch=getchar();}
	return x*f;
}
bool Mbe;

int n,m,k;
int vis[maxn],ans[maxn];
int id(int u,int v){return (u-1)*m+v;}
pii pos(int id){
	int u=(id-1)/m+1,v=id-(u-1)*m;
	return {u,v};
}
int fx[8][2]={{1,1},{1,0},{1,-1},{0,1},{0,-1},{-1,1},{-1,0},{-1,-1}};
int f[maxn],siz[maxn];
int fd(int x){
	if(f[x]==x)return x;
	return fd(f[x]);
}
int st[maxn][2],tp;
void merge(int u,int v){
	u=fd(u),v=fd(v);
	if(u==v)return ;
	if(siz[u]>siz[v])swap(u,v);
	st[++tp][0]=u,st[tp][1]=siz[u];
	f[u]=v,siz[v]+=siz[u];
}
void del(){
	siz[f[st[tp][0]]]-=st[tp][1];
	f[st[tp][0]]=st[tp][0];
	tp--;
}
#define mid (l+r>>1)
#define ls nd<<1
#define rs nd<<1|1
vector<pii> tree[maxn<<2];
void updata(int nd,int l,int r,int ql,int qr,pii w){
	// if(nd==1)cout<<w.fi<<" "<<w.se<<" "<<ql<<" "<<qr<<"\n";
	if(ql>qr)return ;
	if(l>=ql&&r<=qr){tree[nd].pb(w);return ;}
	if(ql<=mid)updata(ls,l,mid,ql,qr,w);
	if(qr>mid)updata(rs,mid+1,r,ql,qr,w);
}
int num;
void dfs(int nd,int l,int r){
	int lst=tp;
	for(pii p:tree[nd])merge(p.fi,p.se);
	// cout<<l<<" "<<r<<" "<<siz[fd(n*m+1)]<<"\n";
	if(l==r){
		if(siz[fd(n*m+1)]!=num-1){
			ans[l]=0;
			int i=pos(l).fi,j=pos(l).se;
			for(int o=0;o<8;o++){
				int nx=i+fx[o][0],ny=j+fx[o][1];
				if(nx<=0||ny<=0||nx>n||ny>m)continue;
				if(!vis[id(nx,ny)]){
					updata(1,1,k,l+1,k,{id(i,j),id(nx,ny)});
				}
				else if(vis[id(i,j)]<vis[id(nx,ny)]){
					updata(1,1,k,l+1,vis[id(nx,ny)],{id(i,j),id(nx,ny)});
				}
				else if(!ans[vis[id(nx,ny)]]){
					updata(1,1,k,l+1,k,{id(i,j),id(nx,ny)});
				}
			}			
		}
		else ans[l]=1,num--;
	}
	else dfs(ls,l,mid),dfs(rs,mid+1,r);
	while(tp>lst)del();
}
void work(){
	n=read();m=read();k=read();
	for(int i=1;i<=k;i++){
		int u=read(),v=read();
		vis[id(u,v)]=i;
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++)if(vis[id(i,j)]){
			for(int o=0;o<8;o++){
				int nx=i+fx[o][0],ny=j+fx[o][1];
				if(nx<=0||ny<=0||nx>n||ny>m)continue;
				if(!vis[id(nx,ny)]){
					updata(1,1,k,1,vis[id(i,j)]-1,{id(i,j),id(nx,ny)});
				}
				if(vis[id(i,j)]<vis[id(nx,ny)]){
					updata(1,1,k,1,vis[id(i,j)]-1,{id(i,j),id(nx,ny)});
				}
			}
			if(i==1||i==n||j==1||j==m)updata(1,1,k,1,vis[id(i,j)]-1,{id(i,j),n*m+1});
		}
	}
	for(int i=1;i<=n*m+1;i++)f[i]=i,siz[i]=1;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++)if(!vis[id(i,j)]){
			for(int o=0;o<8;o++){
				int nx=i+fx[o][0],ny=j+fx[o][1];
				if(nx<=0||ny<=0||nx>n||ny>m)continue;
				if(!vis[id(nx,ny)])merge(id(i,j),id(nx,ny));
			}
		}
	}
	for(int i=1;i<=n;i++){
		if(!vis[id(i,1)])merge(n*m+1,id(i,1));
		if(!vis[id(i,m)])merge(n*m+1,id(i,m));
	}
	for(int j=2;j<m;j++){
		if(!vis[id(1,j)])merge(n*m+1,id(1,j));
		if(!vis[id(n,j)])merge(n*m+1,id(n,j));
	}
	// cout<<siz[fd(1)]<<"\n";
	num=n*m+1;dfs(1,1,k);
	for(int i=1;i<=k;i++)printf("%lld",ans[i]);
}

// \
444

bool Med;
int T;
signed main(){
//	freopen(".in","r",stdin);
//	freopen(".out","w",stdout);
	
//	ios::sync_with_stdio(0);
//	cin.tie(0);cout.tie(0);
	
//	cerr<<(&Mbe-&Med)/1048576.0<<" MB\n";
	
	T=1;
	while(T--)work();
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 10040kb

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: 2ms
memory: 10036kb

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: 2ms
memory: 9992kb

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: 0ms
memory: 10008kb

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: 0ms
memory: 9908kb

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: 2ms
memory: 9992kb

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: 0ms
memory: 10036kb

input:

1 4 1
1 2

output:

1

result:

ok "1"

Test #8:

score: -100
Wrong Answer
time: 2ms
memory: 9932kb

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:

1111111111111111111111111111111111111111111110000000000000000000000

result:

wrong answer 1st words differ - expected: '111111111111111111111111111111...1111111110010101101000101101101', found: '111111111111111111111111111111...1111111110000000000000000000000'