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QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#553856	#9241. Sphinx	JohnAlfnov	10	257ms	5052kb	C++17	4.6kb	2024-09-08 21:26:48	2024-09-08 21:26:48

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你现在查看的是最新测评结果

[2024-09-08 21:26:48]
评测

测评结果：10
用时：257ms
内存：5052kb

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[2024-09-08 21:26:48]
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answer

#include<bits/stdc++.h>
#define ONLINE_JUDGE
using namespace std;
#ifdef ONLINE_JUDGE
#include "sphinx.h"
#endif
#ifndef ONLINE_JUDGE
int a[1005],b[1005],cnt=0;
int perform_experiment(vector<int>E){
	printf("%d\n",++cnt);
	int sz=E.size();
	for(int i=0;i<sz;++i){
		b[i]=(E[i]==-1?a[i]:E[i]);
	}
	int ans=1;
	for(int i=0;i<sz-1;++i)ans+=(b[i]!=b[i+1]);
	return ans;
}
#endif
int n,m;
vector<int>C,G;
int fa[255],u[100005],v[100005];
int findfather(int x){
	return x==fa[x]?x:fa[x]=findfather(fa[x]);
}
int aa[255];
int findaa(int x){
	return x==aa[x]?x:aa[x]=findaa(aa[x]);
}
vector<int>gg[255];
int ss[255],vist[255],tt,I;
int query(int l,int r){
	for(int i=0;i<n;++i)vist[i]=0,aa[i]=i,C[i]=n;
	for(int i=l;i<=r;++i)for(auto cu:gg[ss[i]])vist[cu]=1,C[cu]=-1;
	vist[I]=1,C[I]=-1;
	for(int i=0;i<m;++i)if(!vist[u[i]]&&!vist[v[i]]){
		int fu=findaa(u[i]),fv=findaa(v[i]);
		if(fu!=fv)aa[fu]=fv;
	}
	int cnt=0;
	for(int i=0;i<n;++i)if(!vist[i]&&aa[i]==i)++cnt;
	return r-l+1+1+cnt-perform_experiment(C);
}
double ef=0.35;
void solve(int l,int r,int k){
	if(!k)return;
	if(l==r){
		fa[ss[l]]=I;
		return;
	}
	int mid=(l+r)>>1;
	mid=min(r+0.0,l+ef*(r-l));
	int k1=query(l,mid);
	solve(l,mid,k1);
	solve(mid+1,r,k-k1);
}
int s1[255],s2[255];
vector<int>g[255];
int dep[255];
void dfs(int x){
	vist[x]=1;
	for(auto cu:g[x])if(!vist[cu]){
		dep[cu]=dep[x]+1;
		dfs(cu);
	}
}
int p[255],v1[255],v2[255],ss1[255],ss2[255];
int query1(int l,int r,int d){
	for(int i=0;i<n;++i)vist[i]=0,aa[i]=i,C[i]=d;
	for(int i=l;i<=r;++i)for(auto cu:gg[ss1[i]])vist[cu]=1,C[cu]=-1;
	for(int i=0;i<m;++i)if(!vist[u[i]]&&!vist[v[i]]){
		int fu=findaa(u[i]),fv=findaa(v[i]);
		if(fu!=fv)aa[fu]=fv;
	}
	int cnt=0;
	for(int i=0;i<n;++i)if(!vist[i]&&aa[i]==i)++cnt;
	return r-l+1+cnt-perform_experiment(C);
}
int query2(int l,int r,int d){
	for(int i=0;i<n;++i)vist[i]=0,aa[i]=i,C[i]=d;
	for(int i=l;i<=r;++i)for(auto cu:gg[ss2[i]])vist[cu]=1,C[cu]=-1;
	for(int i=0;i<m;++i)if(!vist[u[i]]&&!vist[v[i]]){
		int fu=findaa(u[i]),fv=findaa(v[i]);
		if(fu!=fv)aa[fu]=fv;
	}
	int cnt=0;
	for(int i=0;i<n;++i)if(!vist[i]&&aa[i]==i)++cnt;
	return r-l+1+cnt-perform_experiment(C);
}
void solve1(int l,int r,int d){
	if(l==r){
		G[ss1[l]]=d;v1[ss1[l]]=1;
		return;
	}
	int mid=min(r+0.0,l+(r-l)*ef);
	int f1=query1(l,mid,d);
	if(!f1){
		solve1(mid+1,r,d);
	}else{
		solve1(l,mid,d);
		if(query1(mid+1,r,d))solve1(mid+1,r,d);
	}
}
void solve2(int l,int r,int d){
	if(l==r){
		G[ss2[l]]=d;v2[ss2[l]]=1;
		return;
	}
	int mid=min(r+0.0,l+(r-l)*ef);
	int f1=query2(l,mid,d);
	if(!f1){
		solve2(mid+1,r,d);
	}else{
		solve2(l,mid,d);
		if(query2(mid+1,r,d))solve2(mid+1,r,d);
	}
}
vector<int>find_colours(int N,vector<int>X,vector<int>Y){
	n=N;m=X.size();
	C.resize(n);G.resize(n);
	for(int i=0;i<m;++i)u[i]=X[i],v[i]=Y[i];
	for(int i=0;i<n;++i)fa[i]=i;
	for(int i=0;i<n;++i)p[i]=i;
	mt19937 mt(137777);
	shuffle(p,p+n,mt);
	for(int x=1;x<n;++x){
		int i=p[x];
		I=i;
		for(int j=0;j<x;++j)gg[p[j]].clear();
		for(int j=0;j<x;++j){
			gg[findfather(p[j])].emplace_back(p[j]);
		}
		tt=0;
		for(int j=0;j<x;++j)if(gg[p[j]].size())ss[++tt]=p[j];
		solve(1,tt,query(1,tt));
	}
	for(int j=0;j<n;++j)gg[j].clear();
	for(int j=0;j<n;++j){
		gg[findfather(j)].emplace_back(j);
	}
	for(int i=0;i<n;++i)g[i].clear();
	for(int i=0;i<m;++i)if(findfather(u[i])!=findfather(v[i])){
		int fu=fa[u[i]],fv=fa[v[i]];
		g[fu].emplace_back(fv);
		g[fv].emplace_back(fu);
	}
	int r=findfather(0);
	for(int i=0;i<n;++i)vist[i]=0;
	dep[r]=0;dfs(r);
	int t1=0,t2=0;
	for(int i=0;i<n;++i)if(fa[i]==i){
		if(dep[i]%2)s1[++t1]=i;
		else s2[++t2]=i;
	}
	if(t1+t2==1){
		for(int i=0;i<n;++i){
			for(int j=0;j<n;++j)G[j]=(j==0?-1:i);
			if(perform_experiment(G)==1){
				for(int j=0;j<n;++j)G[j]=i;
				break;
			}
		}
		return G;
	}
	for(int i=0;i<n;++i)v1[i]=v2[i]=0;
	for(int i=0;i<n;++i)p[i]=i;
	shuffle(p,p+n,mt);
	for(int dd=0;dd<n;++dd){
		int d=p[dd];
		int tt1=0,tt2=0;
		for(int i=1;i<=t1;++i)if(!v1[s1[i]]){
			ss1[++tt1]=s1[i];
		}
		for(int i=1;i<=t2;++i)if(!v2[s2[i]]){
			ss2[++tt2]=s2[i];
		}
		shuffle(ss1+1,ss1+tt1+1,mt);
		shuffle(ss2+1,ss2+tt2+1,mt);
		if(tt1&&query1(1,tt1,d))solve1(1,tt1,d);
		if(tt2&&query2(1,tt2,d))solve2(1,tt2,d);
	}
	for(int i=0;i<n;++i)G[i]=G[fa[i]];
	return G;
}
#ifndef ONLINE_JUDGE
int main(){
	int n=10;
	mt19937 mt(time(0));
	for(int i=0;i<n;++i)a[i]=mt()%n;
	vector<int>X(n-1),Y(n-1);
	for(int i=0;i<n-1;++i){
		X[i]=i,Y[i]=i+1;
	}
	auto ans=find_colours(n,X,Y);
	for(int i=0;i<n;++i)assert(a[i]==ans[i]);
	system("sphinx");
	return 0;
}
#endif

Source code, Language: C++17

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 3

Accepted

Test #1:

score: 3

Accepted

time: 0ms

memory: 3764kb

input:

output:

result:

ok #experiments: 2

Test #2:

score: 3

Accepted

time: 1ms

memory: 3812kb

input:

output:

result:

ok #experiments: 4

Test #3:

score: 3

Accepted

time: 0ms

memory: 3812kb

input:

output:

result:

ok #experiments: 4

Test #4:

score: 3

Accepted

time: 0ms

memory: 3820kb

input:

output:

result:

ok #experiments: 3

Subtask #2:

score: 7

Accepted

Dependency #1:

100%

Accepted

Test #5:

score: 7

Accepted

time: 2ms

memory: 4104kb

input:

1978433568
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19784335...

output:

result:

ok #experiments: 191

Test #6:

score: 7

Accepted

time: 0ms

memory: 3908kb

input:

output:

result:

ok #experiments: 259

Test #7:

score: 7

Accepted

time: 2ms

memory: 3840kb

input:

1978433568
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19784335...

output:

result:

ok #experiments: 256

Test #8:

score: 7

Accepted

time: 1ms

memory: 4108kb

input:

output:

result:

ok #experiments: 274

Test #9:

score: 7

Accepted

time: 3ms

memory: 3820kb

input:

1978433568
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19784335...

output:

result:

ok #experiments: 286

Test #10:

score: 7

Accepted

time: 3ms

memory: 4072kb

input:

output:

result:

ok #experiments: 318

Test #11:

score: 7

Accepted

time: 3ms

memory: 3840kb

input:

1978433568
50
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19784335...

output:

result:

ok #experiments: 367

Test #12:

score: 7

Accepted

time: 0ms

memory: 4116kb

input:

1978433568
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19784335...

output:

result:

ok #experiments: 398

Test #13:

score: 7

Accepted

time: 0ms

memory: 3836kb

input:

output:

result:

ok #experiments: 310

Test #14:

score: 7

Accepted

time: 3ms

memory: 3836kb

input:

output:

result:

ok #experiments: 272

Test #15:

score: 7

Accepted

time: 4ms

memory: 3852kb

input:

output:

result:

ok #experiments: 327

Test #16:

score: 7

Accepted

time: 4ms

memory: 3860kb

input:

output:

result:

ok #experiments: 376

Test #17:

score: 7

Accepted

time: 1ms

memory: 3848kb

input:

output:

result:

ok #experiments: 64

Test #18:

score: 7

Accepted

time: 3ms

memory: 3860kb

input:

output:

result:

ok #experiments: 236

Test #19:

score: 7

Accepted

time: 3ms

memory: 3856kb

input:

output:

result:

ok #experiments: 232

Test #20:

score: 7

Accepted

time: 0ms

memory: 3888kb

input:

output:

result:

ok #experiments: 294

Test #21:

score: 7

Accepted

time: 4ms

memory: 3884kb

input:

output:

result:

ok #experiments: 323

Test #22:

score: 7

Accepted

time: 4ms

memory: 3944kb

input:

output:

result:

ok #experiments: 341

Test #23:

score: 7

Accepted

time: 5ms

memory: 3956kb

input:

output:

result:

ok #experiments: 361

Test #24:

score: 7

Accepted

time: 5ms

memory: 3884kb

input:

output:

result:

ok #experiments: 390

Test #25:

score: 7

Accepted

time: 3ms

memory: 4104kb

input:

output:

result:

ok #experiments: 259

Test #26:

score: 7

Accepted

time: 0ms

memory: 4108kb

input:

output:

result:

ok #experiments: 329

Test #27:

score: 7

Accepted

time: 3ms

memory: 4100kb

input:

1978433568
50
49
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19784335...

output:

result:

ok #experiments: 367

Test #28:

score: 7

Accepted

time: 0ms

memory: 3852kb

input:

output:

result:

ok #experiments: 320

Test #29:

score: 7

Accepted

time: 4ms

memory: 4116kb

input:

output:

result:

ok #experiments: 352

Test #30:

score: 7

Accepted

time: 0ms

memory: 4148kb

input:

output:

result:

ok #experiments: 273

Test #31:

score: 7

Accepted

time: 5ms

memory: 4144kb

input:

output:

result:

ok #experiments: 350

Test #32:

score: 7

Accepted

time: 1ms

memory: 3820kb

input:

output:

result:

ok #experiments: 110

Test #33:

score: 7

Accepted

time: 2ms

memory: 3808kb

input:

output:

result:

ok #experiments: 399

Subtask #3:

score: 0

Runtime Error

Test #34:

score: 33

Accepted

time: 31ms

memory: 3796kb

input:

output:

result:

ok #experiments: 1741

Test #35:

score: 33

Accepted

time: 23ms

memory: 3836kb

input:

output:

result:

ok #experiments: 1780

Test #36:

score: 33

Accepted

time: 37ms

memory: 3832kb

input:

output:

result:

ok #experiments: 1930

Test #37:

score: 33

Accepted

time: 22ms

memory: 3840kb

input:

output:

result:

ok #experiments: 1991

Test #38:

score: 33

Accepted

time: 29ms

memory: 3728kb

input:

output:

result:

ok #experiments: 2137

Test #39:

score: 33

Accepted

time: 39ms

memory: 3832kb

input:

output:

result:

ok #experiments: 2295

Test #40:

score: 33

Accepted

time: 41ms

memory: 3864kb

input:

output:

result:

ok #experiments: 2593

Test #41:

score: 33

Accepted

time: 29ms

memory: 3868kb

input:

output:

result:

ok #experiments: 1573

Test #42:

score: 0

Runtime Error

input:

output:

result:

Subtask #4:

score: 0

Runtime Error

Test #43:

score: 21

Accepted

time: 65ms

memory: 5052kb

input:

output:

result:

ok #experiments: 903

Test #44:

score: 21

Accepted

time: 110ms

memory: 4724kb

input:

output:

result:

ok #experiments: 1292

Test #45:

score: 21

Accepted

time: 153ms

memory: 4740kb

input:

output:

result:

ok #experiments: 1693

Test #46:

score: 21

Accepted

time: 181ms

memory: 4732kb

input:

output:

result:

ok #experiments: 1894

Test #47:

score: 21

Accepted

time: 227ms

memory: 5032kb

input:

output:

result:

ok #experiments: 2265

Test #48:

score: 21

Accepted

time: 251ms

memory: 4876kb

input:

output:

result:

ok #experiments: 2408

Test #49:

score: 21

Accepted

time: 257ms

memory: 4964kb

input:

output:

result:

ok #experiments: 2537

Test #50:

score: 21

Accepted

time: 17ms

memory: 4712kb

input:

output:

result:

ok #experiments: 309

Test #51:

score: 0

Runtime Error

input:

output:

result:

Subtask #5:

score: 0

Skipped

Dependency #1:

100%

Accepted

Dependency #2:

100%

Accepted