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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#90584#5828. 游戏Kanate20 633ms60356kbC++144.3kb2023-03-23 20:13:142023-03-23 20:13:15

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.
  • [2023-03-23 20:13:15]
  • 评测
  • 测评结果:20
  • 用时:633ms
  • 内存:60356kb
  • [2023-03-23 20:13:14]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
//#define int long long
#define rint int
#define endl '\n'
int read(){
	int x=0,f=1;char c=getchar();
	while(!isdigit(c)){if(c=='-')f=-1;c=getchar();}
	while(isdigit(c)) x=x*10+c-48,c=getchar();
	return x*f;
}const int N=2e5+10,p=1e9;

int n,m;
vector<int> e[N];
struct Val{
	int x,id;
	bool operator <(const Val &A)const{return x>A.x;}
};
struct data{
	Val x,y,z;
	void operator+=(const Val &A)
	{
		if(A<x) z=y,y=x,x=A;
		else if(A<y) z=y,y=A;
		else if(A<z) z=A;
	}
}d[N];
void dfs(int x=1,int fa=1)
{
	d[x]={0,x,-p,0,-p,0};
	for(auto &it:e[x])
	if(it!=fa)
	{
		dfs(it,x);
		Val res=d[it].x;
		res.x++,d[x]+=res;
	}
}
Val sum[N],suf[N];
void sel(int x=1,int fa=1,Val res={-p,0})
{
	res.x++,d[x]+=res;
	int sz=e[x].size();Val tmp;
	for(rint i=0;i<sz;i++) tmp=d[e[x][i]].x,tmp.x++,sum[e[x][i]]=suf[e[x][i]]=(e[x][i]==fa?res:min(tmp,res));
	for(rint i=1;i<sz;i++)  sum[e[x][i]]=min(sum[e[x][i]],sum[e[x][i-1]]);
	for(rint i=sz-2;~i;i--) suf[e[x][i]]=min(suf[e[x][i]],suf[e[x][i+1]]);
	if(sz==1) return;
	if(e[x][0]!=fa)	   sel(e[x][0],x,suf[e[x][1]]);
	if(e[x][sz-1]!=fa) sel(e[x][sz-1],x,sum[e[x][sz-2]]);
	for(rint i=1;i+1<sz;i++)
	if(e[x][i]!=fa) sel(e[x][i],x,min(sum[e[x][i-1]],suf[e[x][i+1]]));
}

int mm;
struct node{
	int x,y,z,id;bool how;
}q[N];
struct cmp{
	bool operator ()(const node &A,const node &B){return A.z<B.z;}
};
bool cmpx(const node &A,const node &B){return A.x!=B.x?A.x<B.x:A.how>B.how;}
bool cmpy(const node &A,const node &B){return A.y!=B.y?A.y<B.y:A.how>B.how;}
multiset<node,cmp> s;
vector<node> ve[N];
bool use[N];
void cdq(int l=1,int r=mm)
{
	if(l==r) return;
	int mid=(l+r)>>1;
	cdq(l,mid);
	sort(q+l,q+mid+1,cmpy),sort(q+mid+1,q+r+1,cmpy);
	for(rint i=l,j=mid+1;j<=r;j++)
	{
		while(i<=mid&&q[i].y<=q[j].y){
			if(q[i].how&&!use[q[i].id]) s.insert(q[i]);
			i++;
		}
		if(!q[j].how)
		{
			auto it=s.upper_bound(q[j]);
			while(it!=s.begin())
			{
				--it;
				ve[q[j].id].push_back(*it),use[it->id]=1;
				it=s.erase(it);
			}
		}
	}
	s.clear();
	cdq(mid+1,r);
}

void init()
{
	dfs(),sel();
//	for(rint i=1;i<=n;i++) 
//		cout<<i<<":("<<d[i].x.x<<" "<<d[i].x.id<<") "
//		<<"("<<d[i].y.x<<" "<<d[i].y.id<<") "
//		<<"("<<d[i].z.x<<" "<<d[i].z.id<<")"<<endl;
	mm=m;
	for(rint i=1;i<=n;i++) q[++mm]={d[i].x.x,d[i].y.x,d[i].z.x,i,0};
	cdq();
//	for(rint i=1;i<=n;i++)
//	{
//		cout<<i<<": ";
//		for(auto &it:ve[i]) cout<<it.id<<" ";cout<<endl;
//	}
}

int FA[N],D[N],sz[N],son[N];
int dfn[N],tot,top[N],o[N];
void dfs1(int x=1,int fa=0,int dep=1)
{
	FA[x]=fa,D[x]=dep,sz[x]=1;
	for(auto &it:e[x])
	if(it!=fa)
	{
		dfs1(it,x,dep+1),sz[x]+=sz[it];
		if(sz[son[x]]<sz[it]) son[x]=it;
	}
}
void dfs2(int x=1,int tp=1)
{
	dfn[x]=++tot,top[x]=tp,o[tot]=x;
	if(!son[x]) return;
	dfs2(son[x],tp);
	for(auto &it:e[x])
	if(!dfn[it]) dfs2(it,it);
}

int ask(int l,int r,int dep)
{
	int x=l,y=r,fa;
	while(top[x]!=top[y])
	{
		if(D[top[x]]<D[top[y]]) swap(x,y);
		x=FA[top[x]];
	}
	if(D[x]>D[y]) fa=y;
	else fa=x;
//	cout<<"ask "<<l<<" "<<r<<" "<<fa<<" "<<dep<<endl;
	if(D[l]-dep>=D[fa])
	{
		int tar=D[l]-dep;
		while(D[top[l]]>tar) l=FA[top[l]];
		return o[dfn[l]-(D[l]-tar)];
	}
	else
	{
		int tar=D[fa]+dep-(D[l]-D[fa]);
		while(D[top[r]]>tar) r=FA[top[r]];
		return o[dfn[r]-(D[r]-tar)];
	}
}
int ans[N][3],ord[N][3];

void work()
{
	dfs1(),dfs2();
	for(rint i=1;i<=n;i++)
	for(auto &it:ve[i])
		ans[it.id][ord[it.id][0]]=ask(i,d[i].x.id,it.x),
		ans[it.id][ord[it.id][1]]=ask(i,d[i].y.id,it.y),
		ans[it.id][ord[it.id][2]]=ask(i,d[i].z.id,it.z);
	for(rint i=1;i<=m;i++) cout<<ans[i][0]<<" "<<ans[i][1]<<" "<<ans[i][2]<<endl;
}

signed main()
{
//	ios::sync_with_stdio(0);
	n=read();
	for(rint i=1;i<n;i++)
	{
		int x=read(),y=read();
		e[x].push_back(y),e[y].push_back(x);
	}
	m=read();
	for(rint i=1;i<=m;i++)
	{
		int x=read(),z=read(),y=read();
		q[i]={(x-y+z)>>1,(x+y-z)>>1,(y+z-x)>>1,i,1},ord[i][1]=1,ord[i][2]=2;
		if(q[i].y>q[i].x) swap(q[i].y,q[i].x),swap(ord[i][0],ord[i][1]);
		if(q[i].z>q[i].y) swap(q[i].z,q[i].y),swap(ord[i][1],ord[i][2]);
		if(q[i].y>q[i].x) swap(q[i].y,q[i].x),swap(ord[i][0],ord[i][1]);
//		cout<<"q "<<i<<" "<<q[i].x<<" "<<q[i].y<<" "<<q[i].z<<endl;
	}
	init();
	work();
	return 0;
}


Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 0
Wrong Answer
time: 3ms
memory: 12864kb

input:

500
279 196
182 105
400 14
278 217
198 411
379 318
120 421
314 95
437 325
23 433
71 485
192 154
90 224
180 71
328 93
183 101
404 349
223 285
492 100
366 480
29 328
200 448
365 156
226 231
129 167
246 273
171 452
284 6
131 471
229 90
480 48
448 157
240 221
7 36
401 200
255 438
436 110
281 489
388 258...

output:

344 21 37
312 488 386
125 362 21
193 215 149
297 386 330
26 280 165
193 28 486
261 283 360
399 268 30
151 60 87
152 360 427
183 74 270
124 265 227
124 342 399
146 17 21
360 477 427
477 60 331
60 417 266
74 323 39
17 360 219
26 281 438
10 298 331
68 399 332
205 416 50
152 152 331
51 270 356
37 172 18...

result:

wrong answer Wrong answer on test 2

Test #2:

score: 0
Wrong Answer
time: 7ms
memory: 13216kb

input:

2000
643 1871
689 23
1822 1443
1031 1027
1655 845
189 771
1561 498
19 1778
576 1080
904 717
1690 291
1387 1077
398 811
1310 1231
645 1291
480 927
330 170
1464 1057
1033 894
1308 288
1292 1529
1212 122
1108 401
89 1118
1058 1088
1764 1314
981 1255
1893 864
180 1887
1903 843
734 1412
883 1013
1739 124...

output:

1449 1560 441
0 0 0
679 650 275
1381 1941 1955
861 266 546
234 1937 926
0 0 0
731 552 87
215 1672 891
1546 798 396
1215 861 1596
1671 1756 1143
1060 589 134
182 422 822
1050 422 725
895 546 605
822 546 266
1981 552 951
0 0 0
0 0 0
266 1772 1272
504 243 1050
0 0 0
1726 1795 646
323 1557 27
1764 303 1...

result:

wrong answer Wrong answer on test 1

Test #3:

score: 0
Wrong Answer
time: 261ms
memory: 36592kb

input:

200000
56968 132021
105656 107536
123627 58349
119191 138198
133708 142638
114350 24980
137784 40346
124158 130204
80684 183207
78156 94449
21893 157560
54464 73571
145830 57756
160288 32120
178632 142663
26565 185985
70576 24906
32217 115826
185756 137673
54280 179613
77826 144447
66005 29955
11745...

output:

44708 71361 45838

result:

wrong answer Wrong answer on test 1

Test #4:

score: 10
Accepted
time: 256ms
memory: 36668kb

input:

200000
41999 100683
85781 129266
122431 179332
162416 44814
24405 42267
154161 12483
178049 159964
67625 152391
133072 25866
178005 14695
94384 170290
54701 40323
66280 128515
159022 55057
14985 12920
182805 40659
173117 67973
99771 26102
198919 94543
23608 187601
61125 5759
89437 47647
18142 192402...

output:

154818 24899 74592

result:

ok Accepted!

Test #5:

score: 0
Wrong Answer
time: 262ms
memory: 36584kb

input:

200000
195072 75458
31991 127114
60943 49502
186375 1130
45394 147217
168455 84307
132752 188952
101108 130004
107490 22003
16275 187645
111002 42669
138880 137115
112688 172751
81697 99037
166996 18495
2234 56119
170807 101349
105736 23180
148159 40863
136678 11849
190707 91245
61779 120740
157115 ...

output:

137496 1448 35530
144255 137984 179117
53739 89886 119043
141295 148920 90290
103697 156208 171061
29198 153727 22907
112619 40968 68885
23757 12553 141497
22362 93534 21452
1480 129015 63023

result:

wrong answer Wrong answer on test 1

Test #6:

score: 10
Accepted
time: 232ms
memory: 36548kb

input:

200000
48556 78408
155026 9376
8983 61211
150393 85068
90892 109283
75746 89742
6760 187245
168658 130735
68602 127646
60802 149828
22898 59471
172845 100274
42303 190696
7612 134905
94702 59800
129633 192496
19903 64869
51318 63358
34692 66030
98535 176606
153647 177529
157903 147292
106273 107278
...

output:

41374 151532 107872
59536 166333 11082
191314 176954 147915
53508 78768 7072
48857 25606 197721
164631 28349 60403
110232 16163 3
117163 99474 92047
188690 169825 168093
113102 46567 63864

result:

ok Accepted!

Test #7:

score: 0
Wrong Answer
time: 354ms
memory: 60356kb

input:

200000
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
30 31
31 32
32 33
33 34
34 35
35 36
36 37
37 38
38 39
39 40
40 41
41 42
42 43
43 44
44 45
45 46
46 47
47 48
48 49
49 50
50 51
51 52
52 5...

output:

0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
...

result:

wrong answer Integer 0 violates the range [1, 200000]

Test #8:

score: 0
Wrong Answer
time: 522ms
memory: 53860kb

input:

200000
5732 55198
128966 25317
114737 116391
150003 18274
43867 70745
76222 4169
55976 114951
198396 72896
38647 19711
12756 172119
73197 117994
117512 14177
130965 126990
119440 183341
142023 60829
111893 57350
122754 123305
36525 79077
36447 91967
135405 170456
165839 147481
66074 175822
22238 264...

output:

167604 167604 181947
167604 167604 126248
167604 167604 116508
167604 167604 77572
167604 167604 189796
167604 167604 32539
167604 167604 31161
167604 167604 88736
167604 167604 189194
167604 167604 199382
167604 167604 95130
167604 167604 99255
167604 167604 129420
167604 167604 139777
167604 16760...

result:

wrong answer Wrong answer on test 28

Test #9:

score: 0
Wrong Answer
time: 633ms
memory: 47704kb

input:

200000
185063 17064
180987 114492
88071 71803
158363 135918
60910 54848
97338 6734
192937 9410
49617 199068
82499 63554
188791 188152
178767 40866
11304 27212
144234 138097
42236 3946
103355 12683
50992 20598
145723 48620
11709 115688
123172 121379
70541 130844
147827 39431
139372 61280
42705 54015
...

output:

7107 27232 141796
199425 90489 109653
35744 50284 59455
50102 130361 28875
181116 33135 161848
169934 88637 85106
129492 130795 76945
186265 65710 90715
144848 64937 105187
23869 155062 124671
84782 35817 167918
43450 7480 46422
82742 193611 102475
92303 150834 38338
75275 167560 10364
137993 25195 ...

result:

wrong answer Wrong answer on test 2

Test #10:

score: 0
Wrong Answer
time: 627ms
memory: 47744kb

input:

200000
197244 185999
18639 124754
154223 12099
53676 167616
22710 22294
150412 66132
19320 75478
170410 122661
130961 175554
171586 85572
188386 81238
120249 117687
43214 126266
8744 165654
164725 189519
124144 170329
86605 100197
130545 17030
113301 96665
67733 187286
37846 146399
75352 117550
3235...

output:

135279 172309 26462
187823 115844 191502
81355 142861 77153
94624 51830 167769
176965 88035 170884
185194 11608 64977
115054 5331 76357
16214 101600 118957
141386 35201 113627
26107 101442 89477
132582 100122 165252
98743 145411 111633
74622 10772 21901
74198 83219 175428
33976 26061 63251
50049 621...

result:

wrong answer Wrong answer on test 3