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QOJ

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
#306497#5828. 游戏QOJ114514ancestor100 ✓290ms113816kbC++142.9kb2024-01-16 20:13:252024-01-16 20:13:25

Judging History

你现在查看的是最新测评结果

  • [2024-01-16 20:13:25]
  • 评测
  • 测评结果:100
  • 用时:290ms
  • 内存:113816kb
  • [2024-01-16 20:13:25]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
#define N 200005
#define S 20
#define upd if(f[u][2]>f[u][1])swap(f[u][2],f[u][1]),swap(vt[u][2],vt[u][1]);\
	if(f[u][1]>f[u][0])swap(f[u][1],f[u][0]),swap(vt[u][1],vt[u][0]);
using namespace std;
int n,q,f[N][3],vt[N][3],g[N],vg[N],p[N][S],ans[N][3],d[N],xx[N],yy[N],zz[N];
vector<int> to[N];
struct tw{int op,a[3],id;}tt[N*2];
void add(int u,int v){to[u].push_back(v);}
void dfs(int u,int fa){
	for(int i=1;i<S;i++)p[u][i]=p[p[u][i-1]][i-1];
	vt[u][0]=vt[u][1]=vt[u][2]=u;
	for(int v:to[u])if(v^fa){d[v]=d[u]+1,p[v][0]=u,dfs(v,u);
	if(f[v][0]+1>f[u][2])f[u][2]=f[v][0]+1,vt[u][2]=vt[v][0];upd}}
void ddfs(int u){for(int v:to[u])if(v^p[u][0]){
		g[v]=g[u]+1,vg[v]=vg[u];int flg=(f[u][0]==(f[v][0]+1));
		if(f[u][flg]+1>g[v])g[v]=f[u][flg]+1,vg[v]=vt[u][flg];ddfs(v);}
	if(g[u]>f[u][2])f[u][2]=g[u],vt[u][2]=vg[u];upd}
bool cmp(const tw &x,const tw &y){for(int k=0;k<3;k++)
	if(x.a[k]^y.a[k])return x.a[k]>y.a[k];return x.op>y.op;}
bool cmpid(const tw &x,const tw &y){
	if(x.op^y.op)return x.op<y.op;
	return x.id<y.id;
}
int bit[N],bitfr[N];
void add(int x,int v,int id){
	while(x<=n+1){if(v>=bit[x])bit[x]=v,bitfr[x]=id;x+=x&-x;}}
pair<int,int> qry(int x){int r=0,fr=0;
	while(x){if(bit[x]>=r&&bitfr[x])r=bit[x],fr=bitfr[x];x-=x&-x;}
	return make_pair(r,fr);}
int LCA(int u,int v){if(d[u]<d[v])swap(u,v);int dlt=d[u]-d[v];
	for(int i=0;i<S;i++)if((dlt>>i)&1)u=p[u][i];if(u==v)return u;
	for(int i=S-1;i>=0;i--)if(p[u][i]^p[v][i])u=p[u][i],v=p[v][i];return p[u][0];}
int pth(int u,int v,int k,int lca=0){
	if(!lca)lca=LCA(u,v);
	int dis=d[u]+d[v]-2*d[lca],du=d[u]-d[lca];
	if(k>du)return pth(v,u,dis-k);
	for(int i=0;i<S;i++)if((k>>i)&1)u=p[u][i];
	return u;}
signed main(){
	ios::sync_with_stdio(0),cin.tie(0),cin>>n;
	for(int i=1,u,v;i<n;i++)cin>>u>>v,add(u,v),add(v,u);
	dfs(1,0),vg[1]=1,ddfs(1),cin>>q;
	for(int i=1;i<=q;i++){cin>>xx[i]>>yy[i]>>zz[i];
		tt[i].a[0]=(xx[i]+yy[i]-zz[i])/2;
		tt[i].a[1]=(xx[i]-yy[i]+zz[i])/2;
		tt[i].a[2]=(-xx[i]+yy[i]+zz[i])/2;
		stable_sort(tt[i].a,tt[i].a+3,greater<int>());
		tt[i].op=1,tt[i].id=i;
	}
	for(int i=1;i<=n;tt[i+q].op=2,i++)
		for(int k=0;k<3;k++)tt[i+q].a[k]=f[i][k],tt[i+q].id=i;
	stable_sort(tt+1,tt+1+n+q,cmp);
	for(int i=1;i<=n+q;i++){
		if(tt[i].op==2)add(n-tt[i].a[1]+1,tt[i].a[2],tt[i].id);
		else{
			auto res=qry(n-tt[i].a[1]+1);
			if(tt[i].a[2]<=res.first)
			for(int k=0;k<3;k++)ans[tt[i].id][k]=pth(res.second,vt[res.second][k],tt[i].a[k]);
		}
	}
	stable_sort(tt+1,tt+1+n+q,cmpid);
	for(int i=1;i<=q;i++){
		int u=ans[i][0],v=ans[i][1],w=ans[i][2],x=tt[i].a[0],y=tt[i].a[1],z=tt[i].a[2];
        #define prt(a,b,c,u,v,w) if(a==xx[i]&&b==yy[i]&&c==zz[i]){cout<<u<<' '<<v<<' '<<w<<'\n';continue;}
		prt(x+y,x+z,y+z,u,v,w);
        prt(x+z,x+y,y+z,u,w,v);
        prt(x+y,y+z,x+z,v,u,w);
        prt(y+z,x+y,x+z,v,w,u);
        prt(x+z,y+z,x+y,w,u,v);
        prt(y+z,x+z,x+y,w,v,u);
	}
	return 0;
}

详细

Test #1:

score: 10
Accepted
time: 0ms
memory: 20424kb

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:

93 175 456
421 47 239
361 278 175
238 136 473
39 239 152
132 110 361
238 281 7
203 125 202
403 39 421
120 350 435
215 202 378
487 217 456
13 110 125
423 248 328
430 240 175
202 443 378
413 350 454
278 228 360
13 148 211
429 49 36
202 50 110
211 353 406
361 328 439
17 169 113
215 305 406
110 360 431
...

result:

ok Accepted!

Test #2:

score: 10
Accepted
time: 5ms
memory: 20880kb

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:

1995 1000 418
528 898 1026
809 1000 1283
870 831 1000
692 1343 1533
1285 1111 1118
798 1262 1738
1563 1991 727
1277 270 1095
98 1968 439
29 692 1414
464 413 195
176 910 809
89 572 1001
664 572 722
158 1533 174
1001 1533 1343
989 1991 735
652 1950 1672
1848 1279 1220
1343 409 105
1458 368 664
1149 17...

result:

ok Accepted!

Test #3:

score: 10
Accepted
time: 155ms
memory: 78492kb

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:

87763 127372 167377

result:

ok Accepted!

Test #4:

score: 10
Accepted
time: 157ms
memory: 81088kb

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:

82066 7276 199629

result:

ok Accepted!

Test #5:

score: 10
Accepted
time: 149ms
memory: 84144kb

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:

34411 98198 27046
39355 49857 70450
52145 64637 69064
47190 118391 172547
39160 61668 93926
47753 111291 33917
86727 167090 151320
187258 164457 118748
88824 54873 116603
197158 106757 196326

result:

ok Accepted!

Test #6:

score: 10
Accepted
time: 152ms
memory: 83552kb

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:

160968 115648 3363
156481 27494 156628
3364 22086 157918
126929 139436 4472
147837 75665 40179
31684 19769 84929
77495 79528 148651
49868 110284 99352
12157 122489 51911
142520 126427 172234

result:

ok Accepted!

Test #7:

score: 10
Accepted
time: 232ms
memory: 113816kb

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:

17305 162949 100001
129804 100001 61045
5222 120705 100001
100001 79890 116671
64026 105656 100001
13516 100001 128131
100001 156172 41388
177629 100001 5761
174290 1 131964
175188 154225 1
142541 139642 1
39640 100001 121712
104028 83446 100001
6718 100001 183956
8968 108150 100001
17865 100001 112...

result:

ok Accepted!

Test #8:

score: 10
Accepted
time: 250ms
memory: 96008kb

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:

197325 197325 4704
197325 197325 10591
56264 56264 38396
197325 197325 109303
197325 197325 79504
197325 197325 99289
197325 197325 69799
197325 197325 174490
197325 197325 126621
197325 197325 140463
197325 197325 167534
197325 197325 102608
197325 197325 12754
197325 197325 186281
197325 197325 15...

result:

ok Accepted!

Test #9:

score: 10
Accepted
time: 278ms
memory: 96008kb

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:

80587 34708 144003
147087 81464 42045
104657 112119 167698
165046 74246 102483
142619 34588 160376
81857 53666 87450
113149 177939 151070
196768 112246 199684
155312 21334 5823
172100 54335 184300
119888 20580 66285
44224 98649 113772
33460 133493 71093
179652 37925 80938
171545 129932 159894
145161...

result:

ok Accepted!

Test #10:

score: 10
Accepted
time: 290ms
memory: 95860kb

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:

52953 115995 20019
95761 156955 99574
2614 160961 93061
52821 146957 191755
41838 63792 156254
145651 155074 78456
58258 144129 162505
166586 3669 94060
169597 31844 74478
137988 168152 59440
73735 106440 172760
11066 19691 100001
160854 8619 7976
95660 185898 38381
17492 146460 171987
172124 104506...

result:

ok Accepted!

Extra Test:

score: 0
Extra Test Passed