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#213531#2769. 覆盖jsxheng10035880ms300584kbC++111.4kb2024-11-12 20:10:242024-11-12 23:22:27

answer

#include<bits/stdc++.h>
#define int long long
using namespace std;
namespace IO{
	template<typename T> inline void read(T &x){
		bool f=1;x=0;char ch=getchar();
		while(ch<'0'||ch>'9'){if(ch=='-')f=0;ch=getchar();}
		while(ch>='0'&&ch<='9')x=(x<<1)+(x<<3)+(ch&15),ch=getchar();
		x=f?x:-x;
	}
	template<typename T> inline void write(T x){
		if(x<0) putchar('-'),x=-x;
	   	if(x>9) write(x/10);
	   	putchar(('0'+x%10));
	}
	template <typename T,typename ...Args> inline void read(T &x,Args &...args){read(x);read(args...);}
	template<typename T> inline void write(T x,char c){write(x),putchar(c);}
}
using namespace IO;
const int maxn=2000005;
int n,m;
set<int> Q[maxn];
vector<int> G[maxn],res;
int ans[maxn],tot;
void dfs(int u,int fa){
	for(auto v:G[u]){
		if(v!=fa){
			dfs(v,u);
			if(Q[u].size()<Q[v].size())swap(Q[u],Q[v]);
			for(auto t:Q[v]){
				if(Q[u].find(t)!=Q[u].end()){ans[u]=1;break;}
				else Q[u].insert(t);
			}
		}
	}
	if(ans[u]==1){
		res.push_back(u);
		tot++;Q[u].clear();
	}
}
signed main(){
	read(n);
	for(int i=1,u,v;i<n;++i){
		read(u,v);
		G[u].push_back(v),G[v].push_back(u);
	}
	read(m);
	for(int i=1,u,v;i<=m;++i){
		read(u,v);
		if(u == v){ans[u]=1;continue;}
		Q[u].insert(i);
		Q[v].insert(i);
	}
	dfs(1,0);
	write(res.size(),'\n');
	sort(res.begin(),res.end());
	for(auto x:res)write(x,' ');
	return 0;
}
源文件, 语言: C++11

详细

小提示：点击横条可展开更详细的信息

Subtask #1:

score: 30
Accepted

Test #1:

score: 30
Accepted
time: 24ms
memory: 141808kb

input:

20
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 13
17 15
18 16
19 17
20 18
...

output:

2
3 10

result:

ok ok

Test #2:

score: 0
Accepted
time: 23ms
memory: 141804kb

input:

20
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
20 19
...

output:

2
6 13

result:

ok ok

Test #3:

score: 0
Accepted
time: 22ms
memory: 141812kb

input:

20
2 1
3 1
4 3
5 1
6 5
7 4
8 7
9 8
10 9
11 10
12 6
13 2
14 7
15 14
16 11
17 12
18 17
19 7
20 15
5
4 ...

output:

3
1 4 11

result:

ok ok

Test #4:

score: 0
Accepted
time: 20ms
memory: 141808kb

input:

20
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
20 19
...

output:

2
5 11

result:

ok ok

Test #5:

score: 0
Accepted
time: 20ms
memory: 141812kb

input:

20
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 6
10 8
11 10
12 11
13 11
14 12
15 13
16 9
17 15
18 16
19 16
20 17
1...

output:

6
1 3 7 10 17 19

result:

ok ok

Test #6:

score: 0
Accepted
time: 23ms
memory: 141812kb

input:

20
2 1
3 2
4 3
5 3
6 5
7 4
8 6
9 8
10 7
11 7
12 10
13 12
14 13
15 9
16 14
17 16
18 16
19 17
20 15
12...

output:

3
4 9 13

result:

ok ok

Test #7:

score: 0
Accepted
time: 31ms
memory: 141804kb

input:

20
2 1
3 1
4 2
5 3
6 4
7 5
8 6
9 7
10 8
11 9
12 10
13 11
14 10
15 14
16 10
17 13
18 4
19 18
20 4
2
1...

output:

2
5 8

result:

ok ok

Test #8:

score: 0
Accepted
time: 29ms
memory: 141804kb

input:

20
2 1
3 2
4 3
5 4
6 5
7 4
8 7
9 6
10 9
11 8
12 11
13 10
14 10
15 12
16 14
17 13
18 17
19 14
20 18
4...

output:

2
4 10

result:

ok ok

Test #9:

score: 0
Accepted
time: 15ms
memory: 141812kb

input:

20
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 8
12 10
13 12
14 8
15 13
16 8
17 8
18 16
19 15
20 11
12
8...

output:

3
3 8 10

result:

ok ok

Test #10:

score: 0
Accepted
time: 20ms
memory: 141804kb

input:

20
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 7
10 9
11 10
12 8
13 11
14 12
15 13
16 14
17 15
18 16
19 18
20 19
1...

output:

2
7 12

result:

ok ok

Subtask #2:

score: 30
Accepted

Test #11:

score: 30
Accepted
time: 16ms
memory: 141872kb

input:

1000
2 1
3 2
4 3
5 4
6 3
7 6
8 7
9 8
10 9
11 10
12 5
13 11
14 13
15 14
16 15
17 12
18 16
19 18
20 19...

output:

11
53 131 186 235 258 280 289 317 397 471 585

result:

ok ok

Test #12:

score: 0
Accepted
time: 26ms
memory: 141872kb

input:

1000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 12
16 14
17 16
18 17
19 18
20 1...

output:

16
96 109 110 114 152 154 179 285 315 418 463 469 526 561 610 822

result:

ok ok

Test #13:

score: 0
Accepted
time: 28ms
memory: 141848kb

input:

1000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
20 1...

output:

2
40 305

result:

ok ok

Test #14:

score: 0
Accepted
time: 38ms
memory: 141880kb

input:

1000
2 1
3 2
4 3
5 4
6 4
7 5
8 6
9 7
10 8
11 9
12 11
13 10
14 12
15 14
16 13
17 15
18 16
19 17
20 18...

output:

15
36 77 111 161 164 218 236 277 281 391 408 410 460 577 738

result:

ok ok

Test #15:

score: 0
Accepted
time: 35ms
memory: 141908kb

input:

1000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
20 1...

output:

17
46 104 126 230 293 313 324 439 460 462 469 504 513 526 546 646 694

result:

ok ok

Test #16:

score: 0
Accepted
time: 51ms
memory: 141848kb

input:

1000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
20 1...

output:

6
18 114 168 201 311 651

result:

ok ok

Test #17:

score: 0
Accepted
time: 43ms
memory: 141884kb

input:

1000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 13
16 14
17 16
18 17
19 15
20 1...

output:

16
11 42 68 113 171 249 311 341 361 373 423 450 497 567 586 649

result:

ok ok

Test #18:

score: 0
Accepted
time: 28ms
memory: 141848kb

input:

1000
2 1
3 2
4 3
5 4
6 5
7 6
8 6
9 8
10 9
11 7
12 11
13 10
14 12
15 13
16 15
17 14
18 15
19 18
20 16...

output:

4
15 167 387 437

result:

ok ok

Test #19:

score: 0
Accepted
time: 35ms
memory: 141860kb

input:

1000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
20 1...

output:

10
33 158 210 236 363 364 367 372 873 978

result:

ok ok

Test #20:

score: 0
Accepted
time: 50ms
memory: 141852kb

input:

1000
2 1
3 2
4 3
5 4
6 5
7 6
8 3
9 8
10 9
11 10
12 11
13 7
14 12
15 13
16 7
17 14
18 17
19 15
20 16
...

output:

5
7 85 118 241 307

result:

ok ok

Subtask #3:

score: 40
Accepted

Test #21:

score: 40
Accepted
time: 1336ms
memory: 205172kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 11
15 14
16 13
17 15
18 16
19 17
2...

output:

5
260 10715 16698 23494 49620

result:

ok ok

Test #22:

score: 0
Accepted
time: 1128ms
memory: 205588kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

45
2404 7524 11229 11999 14383 16080 18852 24573 25801 31547 35420 37754 42334 58888 69242 72415 820...

result:

ok ok

Test #23:

score: 0
Accepted
time: 1155ms
memory: 218400kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

288
553 5636 9673 9795 15417 22482 28415 29113 30841 31695 36154 36370 41110 45282 46034 47993 48884...

result:

ok ok

Test #24:

score: 0
Accepted
time: 1473ms
memory: 211092kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

172
4997 8750 17928 18489 27327 30718 32013 33965 34115 42664 44246 55789 56336 56495 57194 69263 74...

result:

ok ok

Test #25:

score: 0
Accepted
time: 1621ms
memory: 256256kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

635
969 1796 5534 7302 8367 9149 10058 10082 10729 13481 14831 15038 17852 18658 20221 22753 25477 2...

result:

ok ok

Test #26:

score: 0
Accepted
time: 1089ms
memory: 205496kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

27
5198 7509 8142 27608 34761 38220 48041 50127 56909 61117 71286 81891 86675 104143 114045 119648 1...

result:

ok ok

Test #27:

score: 0
Accepted
time: 882ms
memory: 205100kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

6
490 3177 5695 8562 34548 83430

result:

ok ok

Test #28:

score: 0
Accepted
time: 1121ms
memory: 213084kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

220
1404 2780 5137 10384 13852 18479 22969 35367 37404 38380 41605 44793 46628 49267 50316 54862 579...

result:

ok ok

Test #29:

score: 0
Accepted
time: 1120ms
memory: 205208kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

18
2171 9580 14974 16009 28264 35966 39104 40324 45067 52501 56381 68915 76116 77646 77795 181356 21...

result:

ok ok

Test #30:

score: 0
Accepted
time: 1195ms
memory: 205724kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

45
2737 4251 12786 13429 14598 22080 22736 22786 25916 26716 30601 38898 40197 45646 47158 61559 631...

result:

ok ok

Test #31:

score: 0
Accepted
time: 1080ms
memory: 205672kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

32
1116 16424 21197 23111 23813 27073 27779 32582 47061 49460 49619 54106 60014 60225 61690 63492 67...

result:

ok ok

Test #32:

score: 0
Accepted
time: 975ms
memory: 205280kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

5
5384 6708 15117 19941 80900

result:

ok ok

Test #33:

score: 0
Accepted
time: 1030ms
memory: 205344kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

11
4421 6325 8344 16347 35897 44930 46860 57419 78545 299866 326571

result:

ok ok

Test #34:

score: 0
Accepted
time: 941ms
memory: 205104kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

2
5187 7452

result:

ok ok

Test #35:

score: 0
Accepted
time: 1284ms
memory: 211676kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

192
800 3704 4872 12578 14477 19995 22579 25124 29417 31207 32243 34402 42016 44099 44679 45783 4791...

result:

ok ok

Test #36:

score: 0
Accepted
time: 1252ms
memory: 237512kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

489
39 5656 7050 7487 10829 12376 13186 13483 24437 27366 29300 31447 37089 37325 41271 41767 45145 ...

result:

ok ok

Test #37:

score: 0
Accepted
time: 940ms
memory: 205200kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

2
1572 10047

result:

ok ok

Test #38:

score: 0
Accepted
time: 1351ms
memory: 205412kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

6
5177 16799 17244 21899 124227 342086

result:

ok ok

Test #39:

score: 0
Accepted
time: 960ms
memory: 205388kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

3
9574 37101 114239

result:

ok ok

Test #40:

score: 0
Accepted
time: 1241ms
memory: 232616kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

434
2752 3375 3689 4991 6053 9618 12539 12689 13788 16278 19244 20277 22749 25323 28033 30314 36310 ...

result:

ok ok

Test #41:

score: 0
Accepted
time: 1255ms
memory: 205212kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

3
4025 12701 18588

result:

ok ok

Test #42:

score: 0
Accepted
time: 1125ms
memory: 205792kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

46
1396 4100 10862 12634 18427 21454 23016 23231 23273 30104 38220 53924 55565 63057 75176 78809 795...

result:

ok ok

Test #43:

score: 0
Accepted
time: 921ms
memory: 205488kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

9
7458 12356 16676 19276 29074 30431 45809 48149 71934

result:

ok ok

Test #44:

score: 0
Accepted
time: 1444ms
memory: 205316kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

21
3775 7530 8870 10517 18085 30025 34965 42583 58317 58508 59568 71429 100130 147513 149176 154795 ...

result:

ok ok

Test #45:

score: 0
Accepted
time: 2128ms
memory: 300584kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

902
1097 2377 2384 2850 4587 8343 10511 12075 12386 12906 14030 14419 14466 16460 17707 21340 21375 ...

result:

ok ok

Test #46:

score: 0
Accepted
time: 900ms
memory: 205208kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

1
8442

result:

ok ok

Test #47:

score: 0
Accepted
time: 975ms
memory: 205248kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

9
5252 6422 19409 22535 24115 36225 56798 215617 409005

result:

ok ok

Test #48:

score: 0
Accepted
time: 1011ms
memory: 205252kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

5
428 7180 7718 16350 48522

result:

ok ok

Test #49:

score: 0
Accepted
time: 925ms
memory: 205248kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

2
1290 14389

result:

ok ok

Test #50:

score: 0
Accepted
time: 1445ms
memory: 246092kb

input:

2000000
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
14 13
15 14
16 15
17 16
18 17
19 18
2...

output:

559
945 1241 5644 8082 9005 9959 10848 12448 12793 14252 20587 20906 23833 27004 27886 28406 29166 3...

result:

ok ok

Extra Test:

score: 0
Extra Test Passed

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Server time: 2025-02-28 00:04:25 | 开源项目