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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
#421419#961. Smol Vertex CovercqbzlyWA 360ms6672kbC++203.1kb2024-05-25 18:22:522024-05-25 18:22:52

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你现在查看的是最新测评结果

  • [2024-05-25 18:22:52]
  • 评测
  • 测评结果：WA
  • 用时：360ms
  • 内存：6672kb
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  • [2024-05-25 18:22:52]
  • 提交

answer

#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define pb push_back
#define inf 0x3f3f3f3f
using namespace std;
const int N=505;
int T,n,m,cnt,used[N],to[N],bl[N],fa[N],sb;
int low[N],dfn[N],num,fk[N],vs[N];
stack<int>stk;
vector<int>G[N];
vector<int>G0[N]; 
pair<int,int>a[N*N];
pair<int,int>p[N];
mt19937 gen(114514);
bool dfs(int u){
	used[u]=1;
	shuffle(G[u].begin(),G[u].end(),gen);
	for(auto v:G[u]){
		if(used[v])continue;
		used[v]=1;
		int x=to[v];
		to[u]=v,to[v]=u,to[x]=0;
		if(!x||dfs(x))return 1;
		to[v]=x,to[x]=v,to[u]=0;
	}
	return 0;
}
void init(){
	for(int i=1;i<=2*cnt;i++)fa[i]=i,dfn[i]=low[i]=fk[i]=vs[i]=0,G0[i].clear();num=sb=0;
}
void add(int x,int y){
	G0[x].pb(y);
}
void work(int u,int v){
	if(!bl[u]){
		if(v==p[bl[v]].fi)add(bl[v]+cnt,bl[v]);
		else add(bl[v],bl[v]+cnt);
	}
	else if(!bl[v]){
		if(u==p[bl[u]].fi)add(bl[u]+cnt,bl[u]);
		else add(bl[u],bl[u]+cnt);
	}
	else{
		int x=(u==p[bl[u]].se),y=(v==p[bl[v]].se);
		add(bl[u]+(1-x)*cnt,bl[v]+y*cnt);
		add(bl[v]+(1-y)*cnt,bl[u]+x*cnt); 
	}
}
void tarjan(int u){
	low[u]=dfn[u]=++num,stk.push(u),vs[u]=1;
	for(auto v:G0[u]){
		if(!dfn[v]){
			tarjan(v);
			low[u]=min(low[u],low[v]);
		}
		else if(vs[v]){
			low[u]=min(low[u],dfn[v]);
		}
	}
	if(low[u]==dfn[u]){
		int tmp=0;sb++;
		do{
			tmp=stk.top(),stk.pop();
			fk[tmp]=sb,vs[tmp]=0;
		}while(tmp!=u);
	}
}
int main(){
//	freopen("data.in","r",stdin);
	ios::sync_with_stdio(false);
	cin.tie(0),cout.tie(0);
//	cin>>T;
//	while(T--){
		cin>>n>>m;for(int i=1;i<=n;i++)G[i].clear(),bl[i]=0;
		for(int i=1;i<=m;i++){
			int u,v;cin>>u>>v;
			G[u].pb(v),G[v].pb(u);
			//cout<<"edge:"<<u<<" "<<v<<"\n";
			a[i]={u,v};
		}
		for(int i=1;i<=n;i++)to[i]=0;
		for(int i=1;i<=n;i++){
			if(!to[i]){
				for(int j=1;j<=n;j++)used[j]=0;
				dfs(i);
			}
		}
		cnt=0;
		for(int i=1;i<=n;i++){
			if(to[i]&&i<to[i]){
				p[++cnt]={i,to[i]};
				bl[i]=bl[to[i]]=cnt;
			}
		}
		// for(int i=1;i<=n;i++){
		// 	cout<<p[i].fi<<" "<<p[i].se<<"\n";
		// }
		init();
		for(int i=1;i<=m;i++){
			int u=a[i].fi,v=a[i].se;
			if(bl[u]==bl[v])continue;
			work(u,v);
		}
		for(int i=1;i<=cnt*2;i++)if(!dfn[i])tarjan(i);
		bool ok=1;
		for(int i=1;i<=cnt;i++)if(fk[i]==fk[i+cnt])ok=0;
		if(ok){
			cout<<cnt<<"\n";
			for(int i=1;i<=cnt;i++){
				if(fk[i]<fk[i+cnt])cout<<p[i].fi<<" ";
				else cout<<p[i].se<<" ";
			}
			cout<<"\n";
		}
		else{
			bool flg=0;
			for(int i=1;i<=cnt;i++){
				init();
				for(int j=1;j<=m;j++){
					int u=a[j].fi,v=a[j].se;
					if(bl[u]==i||bl[v]==i||bl[u]==bl[v])continue;
					work(u,v);
				}
				for(int j=1;j<=cnt*2;j++)if(!dfn[j])tarjan(j);
				bool ok=1;
				for(int j=1;j<=cnt;j++)if(fk[j]==fk[j+cnt])ok=0;
				if(ok){
					flg=1;
					cout<<cnt+1<<"\n";
					for(int j=1;j<=cnt;j++){
						if(j==i)cout<<p[j].fi<<" "<<p[j].se<<" ";
						else if(fk[j]<fk[j+cnt])cout<<p[j].fi<<" ";
						else cout<<p[j].se<<" ";
					}
					cout<<"\n";
					break;
				}
			}
			if(!flg)cout<<"not smol"<<"\n";
		}
//	}
}
源文件, 语言: C++20

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3548kb

input:

5 5
1 2
2 3
3 4
4 5
1 5

output:

3
1 5 3

result:

ok vertex cover of size 3

Test #2:

score: 0
Accepted
time: 0ms
memory: 3604kb

input:

5 10
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
4 5

output:

not smol

result:

ok not smol

Test #3:

score: 0
Accepted
time: 0ms
memory: 3688kb

input:

3 0

output:

0

result:

ok vertex cover of size 0

Test #4:

score: 0
Accepted
time: 0ms
memory: 3836kb

input:

10 10
2 5
3 8
3 10
6 9
1 4
2 6
2 3
4 6
7 10
4 7

output:

5
1 2 3 6 7

result:

ok vertex cover of size 5

Test #5:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

10 20
1 9
3 6
3 7
8 9
3 8
1 4
5 10
7 10
4 6
7 9
9 10
2 7
1 6
5 8
2 9
1 7
5 7
3 10
2 6
4 10

output:

6
1 9 7 8 6 10

result:

ok vertex cover of size 6

Test #6:

score: 0
Accepted
time: 0ms
memory: 3836kb

input:

50 100
29 49
1 43
12 49
31 46
6 42
25 29
27 37
2 39
3 43
34 43
4 38
2 40
9 14
7 20
22 31
9 42
3 31
36 49
23 33
17 18
34 47
20 36
11 24
5 17
6 29
21 22
5 41
19 28
31 37
8 47
8 42
8 28
1 48
31 41
6 32
14 36
32 42
27 47
1 40
6 30
26 49
9 44
12 22
30 46
9 11
11 28
18 32
13 15
17 44
16 29
17 42
4 21
17 2...

output:

not smol

result:

ok not smol

Test #7:

score: 0
Accepted
time: 1ms
memory: 3716kb

input:

50 300
18 29
25 33
13 27
22 38
43 50
9 47
36 43
15 33
33 36
23 39
17 46
28 35
40 49
24 26
15 30
39 43
9 48
2 4
7 20
13 21
35 40
2 46
12 22
17 33
9 49
17 32
15 28
24 32
7 38
12 32
18 37
13 30
4 24
5 22
6 17
4 26
3 13
5 29
27 34
1 12
16 22
3 14
1 21
22 27
20 49
9 34
18 36
40 42
21 33
44 45
2 49
13 37
...

output:

not smol

result:

ok not smol

Test #8:

score: 0
Accepted
time: 1ms
memory: 3712kb

input:

50 1000
3 35
32 34
2 24
3 10
15 34
9 45
16 24
7 10
15 39
38 40
17 45
21 35
18 36
15 50
22 29
34 40
3 36
43 50
17 19
7 30
27 44
12 48
9 18
14 20
16 30
1 34
20 35
19 33
2 27
13 20
19 32
38 48
27 37
4 28
5 45
6 43
1 36
9 13
4 18
14 32
10 38
3 44
8 47
6 41
18 38
13 40
18 28
40 47
15 18
42 48
15 47
31 36...

output:

not smol

result:

ok not smol

Test #9:

score: 0
Accepted
time: 1ms
memory: 3692kb

input:

200 300
64 134
92 154
82 142
33 198
26 185
24 74
32 144
26 118
113 122
98 130
74 84
70 184
45 181
44 136
44 134
67 185
77 160
21 50
80 181
62 78
196 199
37 174
91 105
17 74
158 166
26 172
70 129
128 133
152 173
15 86
37 67
55 91
45 74
60 141
179 184
22 168
65 161
62 67
117 152
174 181
35 99
80 103
3...

output:

not smol

result:

ok not smol

Test #10:

score: 0
Accepted
time: 2ms
memory: 3924kb

input:

200 1000
19 159
64 180
15 88
82 136
22 57
92 200
86 87
176 194
57 106
116 179
101 128
27 137
41 71
35 139
48 153
177 178
80 131
9 156
29 122
101 148
88 163
90 116
16 72
8 166
100 116
97 161
19 143
78 163
23 119
104 146
91 161
52 66
183 196
29 123
84 86
41 109
65 76
82 161
138 182
108 156
35 94
101 1...

output:

not smol

result:

ok not smol

Test #11:

score: 0
Accepted
time: 7ms
memory: 3852kb

input:

200 5000
60 81
22 145
156 181
27 44
49 89
69 176
61 64
16 199
46 50
75 103
26 168
6 35
60 75
51 117
41 105
20 154
69 100
75 195
22 115
67 72
170 190
31 115
10 200
51 129
14 147
161 163
9 72
22 113
70 87
112 184
28 81
178 197
72 180
171 192
71 116
71 174
30 95
20 157
50 125
142 184
18 130
82 110
65 1...

output:

not smol

result:

ok not smol

Test #12:

score: 0
Accepted
time: 1ms
memory: 3700kb

input:

500 300
201 309
17 37
39 176
416 493
86 475
163 215
127 283
122 274
107 412
7 93
294 434
335 360
50 87
364 372
55 192
341 411
236 299
286 349
79 208
137 470
141 421
21 324
4 165
232 473
367 397
400 475
30 77
177 435
116 133
115 281
416 482
198 498
300 410
173 457
176 450
157 179
402 425
219 486
39 3...

output:

147
3 4 5 6 7 94 176 12 354 399 17 18 20 21 22 410 24 202 181 30 32 34 39 43 44 242 46 151 86 49 50 285 52 54 55 394 481 313 60 64 459 67 68 188 73 76 78 208 294 82 85 91 92 95 96 99 101 201 107 395 109 110 113 183 115 116 118 120 121 122 443 127 128 345 159 470 140 421 403 146 370 260 152 179 158 1...

result:

ok vertex cover of size 147

Test #13:

score: 0
Accepted
time: 4ms
memory: 3676kb

input:

500 1000
232 237
263 478
147 353
131 318
45 109
218 452
377 436
61 326
29 372
394 484
72 374
312 449
451 461
26 113
25 188
21 282
453 484
261 295
449 489
225 422
125 168
123 449
23 211
251 484
40 185
38 304
6 337
71 142
287 356
315 413
185 411
68 111
453 457
70 187
20 183
107 361
324 466
277 483
10 ...

output:

not smol

result:

ok not smol

Test #14:

score: 0
Accepted
time: 13ms
memory: 4156kb

input:

500 5000
78 84
13 468
95 135
258 447
258 267
226 321
132 282
238 355
194 248
75 485
325 390
46 182
156 284
272 289
204 361
15 228
322 448
410 430
35 317
227 386
325 398
207 443
36 280
73 153
117 459
396 494
234 430
140 199
49 357
26 128
177 210
15 231
351 379
357 484
299 489
376 454
177 377
228 331
...

output:

not smol

result:

ok not smol

Test #15:

score: 0
Accepted
time: 360ms
memory: 6672kb

input:

500 124750
260 435
24 351
41 342
79 458
63 342
463 485
313 372
88 486
300 435
144 440
88 480
83 373
126 356
129 486
118 416
83 138
439 447
59 222
1 162
367 487
137 286
253 261
255 451
329 461
276 328
66 184
76 441
228 492
93 396
288 420
2 424
257 318
216 342
249 474
152 200
206 485
13 332
353 406
20...

output:

not smol

result:

ok not smol

Test #16:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

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

output:

9
1 2 20 12 14 11 19 10 18

result:

ok vertex cover of size 9

Test #17:

score: 0
Accepted
time: 0ms
memory: 3668kb

input:

20 40
5 12
10 17
9 15
4 7
8 17
11 12
6 16
8 11
1 15
14 18
9 17
1 6
8 14
3 5
10 15
4 18
3 20
9 14
7 19
2 12
9 19
6 18
10 20
4 13
3 14
4 8
17 18
3 15
18 20
1 17
5 9
7 14
4 9
7 20
6 7
2 7
8 15
13 15
4 16
2 18

output:

10
1 18 3 16 12 7 8 9 10 13

result:

ok vertex cover of size 10

Test #18:

score: 0
Accepted
time: 0ms
memory: 3608kb

input:

20 70
3 4
4 8
7 17
2 7
5 7
3 15
1 16
5 10
13 20
10 19
7 15
8 9
6 16
11 20
18 19
3 5
6 17
1 5
9 11
4 12
15 18
1 15
18 20
5 18
8 14
1 14
10 20
8 17
7 9
13 14
6 14
11 19
4 7
5 8
13 19
4 6
6 9
2 18
10 14
2 10
6 20
12 14
10 15
2 8
1 19
14 18
11 17
3 9
16 18
1 17
11 16
6 19
7 19
13 16
8 19
7 14
12 15
1 2
...

output:

10
1 10 3 6 13 7 8 11 12 18

result:

ok vertex cover of size 10

Test #19:

score: 0
Accepted
time: 0ms
memory: 3676kb

input:

110 50
48 64
54 66
9 76
53 54
54 99
50 100
98 100
48 83
48 63
16 103
87 110
14 110
45 57
71 103
99 103
11 54
38 110
57 102
29 110
2 107
44 110
94 100
9 46
24 32
47 88
36 57
24 34
63 100
12 48
59 103
9 15
2 103
21 57
54 62
12 103
47 108
11 107
54 106
47 75
9 64
24 95
38 100
78 107
48 60
2 9
9 59
39 4...

output:

10
110 107 9 54 103 57 24 100 47 48

result:

ok vertex cover of size 10

Test #20:

score: 0
Accepted
time: 1ms
memory: 3844kb

input:

110 300
43 59
21 78
41 53
8 37
51 55
10 58
36 81
51 105
8 104
69 101
15 84
8 29
4 69
8 83
53 54
51 54
64 69
61 69
50 53
15 46
43 47
51 108
29 69
57 81
16 18
51 109
8 99
18 37
1 43
10 96
15 95
10 14
15 107
8 50
36 51
51 78
81 94
10 66
12 51
69 102
43 63
27 81
8 72
15 44
14 53
43 54
28 69
43 68
69 108...

output:

10
21 8 15 18 51 10 69 43 81 53

result:

ok vertex cover of size 10

Test #21:

score: 0
Accepted
time: 1ms
memory: 3652kb

input:

110 700
42 93
34 45
52 109
26 102
34 100
34 43
57 87
33 34
25 88
42 50
34 62
36 95
60 106
21 87
81 87
99 106
42 56
1 8
78 87
25 48
42 43
8 68
8 104
14 42
13 34
35 109
99 109
39 42
35 102
26 106
42 57
22 42
97 102
1 95
95 100
45 102
31 102
22 34
59 87
82 96
20 106
25 69
8 77
13 25
25 63
49 96
34 57
8...

output:

10
8 42 34 109 95 25 102 96 87 106

result:

ok vertex cover of size 10

Test #22:

score: 0
Accepted
time: 1ms
memory: 3640kb

input:

200 500
9 78
21 41
6 189
106 172
73 198
124 154
71 111
24 77
3 22
193 194
143 187
147 192
11 127
35 49
5 60
139 161
52 96
14 51
28 163
57 105
12 154
155 159
153 187
130 133
71 132
15 95
5 29
119 153
78 96
117 159
69 170
180 188
147 151
28 62
3 142
52 77
1 192
62 68
75 135
8 191
145 187
114 157
91 14...

output:

100
1 67 3 4 5 178 7 191 61 10 87 12 128 37 15 91 118 42 164 20 72 24 25 26 41 197 89 177 126 32 142 49 46 122 38 39 167 43 44 45 47 144 78 51 52 158 55 81 112 124 121 189 62 63 64 65 174 170 109 132 73 117 135 88 127 123 137 84 150 86 90 145 93 139 171 100 104 116 105 106 173 111 195 119 188 125 12...

result:

ok vertex cover of size 100

Test #23:

score: 0
Accepted
time: 1ms
memory: 3812kb

input:

200 3000
109 154
86 90
5 157
30 132
114 162
133 160
88 151
40 112
33 36
76 142
69 171
81 118
115 144
65 128
33 192
178 182
44 91
51 98
94 111
29 122
62 109
8 72
122 195
165 175
74 104
116 126
94 114
139 170
6 192
168 169
67 190
59 64
110 186
62 148
49 180
33 141
81 88
102 165
1 120
116 180
33 111
34...

output:

100
1 161 3 4 199 89 85 8 53 11 12 185 70 191 16 153 71 19 75 115 51 23 24 25 26 27 28 29 30 31 78 58 179 35 36 170 157 187 147 43 91 45 46 103 48 49 111 143 152 55 169 57 88 60 61 62 64 82 173 73 172 80 142 83 178 86 87 114 154 197 164 105 101 104 108 192 112 113 116 135 118 119 155 138 128 159 133...

result:

ok vertex cover of size 100

Test #24:

score: 0
Accepted
time: 0ms
memory: 3872kb

input:

200 8000
149 157
84 176
17 73
100 132
25 181
171 200
16 35
5 78
97 126
113 171
24 184
117 143
40 108
96 192
9 139
109 179
101 161
114 127
156 167
14 161
128 156
71 190
51 183
51 140
74 104
119 151
65 71
158 174
138 161
160 192
9 158
27 67
55 162
100 102
159 174
63 81
47 195
40 148
36 121
107 181
33 ...

output:

100
1 2 126 98 5 195 7 189 60 10 11 42 58 171 72 16 36 31 19 20 21 192 190 24 176 183 182 28 29 30 32 164 62 37 38 181 178 41 59 46 152 52 116 109 65 54 118 167 57 61 135 111 67 69 104 73 75 129 83 177 79 80 81 141 85 86 89 91 120 130 115 100 185 105 117 108 110 112 119 124 123 127 128 133 158 137 1...

result:

ok vertex cover of size 100

Test #25:

score: 0
Accepted
time: 1ms
memory: 3936kb

input:

500 500
271 342
280 463
424 444
322 342
200 239
239 358
449 469
239 269
54 63
98 342
375 488
245 449
338 342
18 63
188 359
274 280
3 449
239 241
75 239
42 239
280 425
375 486
8 280
95 388
321 342
39 280
95 487
219 449
188 312
188 417
270 424
92 375
264 280
59 280
188 444
79 399
188 418
320 424
156 3...

output:

10
188 424 63 399 280 239 375 449 95 342

result:

ok vertex cover of size 10

Test #26:

score: 0
Accepted
time: 1ms
memory: 3720kb

input:

500 1000
9 316
133 491
9 89
55 82
247 480
133 364
139 317
168 411
60 168
339 365
247 279
72 488
55 160
5 339
247 343
60 81
247 483
55 76
139 494
168 374
168 215
21 339
81 500
81 374
143 391
55 207
37 55
168 253
205 391
9 92
2 168
9 70
55 441
9 278
168 335
437 488
9 396
391 411
55 318
81 161
2 247
27...

output:

10
488 168 247 391 339 81 133 139 9 55

result:

ok vertex cover of size 10

Test #27:

score: 0
Accepted
time: 1ms
memory: 3752kb

input:

500 4000
34 440
276 370
287 292
23 449
23 400
34 179
44 317
23 115
30 34
276 388
88 129
276 415
165 300
123 249
300 445
122 287
276 431
283 484
30 283
23 169
276 460
170 270
164 283
123 397
23 263
129 175
208 287
300 315
170 292
66 170
287 375
126 276
287 441
287 487
88 287
300 418
262 276
44 206
11...

output:

10
129 170 44 283 34 23 300 287 123 276

result:

ok vertex cover of size 10

Test #28:

score: 0
Accepted
time: 1ms
memory: 3672kb

input:

500 500
12 25
334 479
235 352
343 496
120 445
178 477
93 477
124 364
55 294
222 463
29 191
18 107
38 97
142 451
29 78
237 438
98 196
26 234
16 189
15 311
297 339
107 300
176 442
218 222
8 396
335 336
456 474
276 495
130 350
59 498
18 441
303 376
308 357
10 35
114 470
403 476
234 282
132 372
6 37
179...

output:

188
1 2 3 4 37 8 9 388 11 66 13 47 15 16 17 239 19 20 22 23 24 25 26 27 28 29 30 31 32 178 34 35 36 38 293 41 42 43 44 45 46 348 332 52 424 487 294 56 57 59 390 328 291 377 217 65 196 71 420 213 419 75 237 137 79 234 81 112 408 113 86 87 257 92 93 94 436 381 97 100 157 324 103 421 105 107 139 109 15...

result:

ok vertex cover of size 188

Test #29:

score: 0
Accepted
time: 3ms
memory: 3976kb

input:

500 3000
27 174
78 179
309 321
33 313
219 225
203 316
30 149
266 270
106 350
369 463
74 433
54 398
82 296
276 430
291 419
122 412
343 427
76 163
113 398
147 482
113 263
56 411
383 396
115 149
161 276
130 207
163 297
191 283
2 68
25 419
120 414
133 409
308 321
235 476
89 176
46 130
80 113
293 405
52 ...

output:

200
1 280 395 4 449 442 287 470 275 351 430 12 396 14 127 16 476 365 19 20 311 490 23 467 25 125 27 28 448 30 374 32 436 198 36 37 462 210 412 72 42 428 253 229 46 215 48 343 50 51 382 53 266 245 56 57 58 352 398 62 63 334 380 207 68 71 73 269 310 76 77 78 291 80 468 307 495 87 469 90 404 92 319 106...

result:

ok vertex cover of size 200

Test #30:

score: 0
Accepted
time: 4ms
memory: 3928kb

input:

500 8000
94 339
209 235
86 449
123 181
230 282
69 341
199 324
21 194
7 72
36 379
75 234
73 84
233 379
148 377
32 56
5 264
111 453
246 475
32 96
202 433
235 328
49 298
104 346
349 427
243 484
104 380
10 477
303 318
57 90
84 347
65 442
188 212
318 323
283 404
127 463
26 490
58 160
430 456
21 147
5 35
...

output:

200
1 115 3 4 5 6 7 436 9 10 11 12 13 14 15 128 342 19 244 21 450 23 24 457 26 27 28 480 30 31 32 34 408 283 460 146 39 43 478 328 209 112 441 322 48 415 388 51 68 54 224 420 410 456 59 60 500 63 319 316 120 358 69 186 270 394 427 391 76 271 78 79 486 83 84 85 86 206 89 90 91 92 93 94 95 212 423 470...

result:

ok vertex cover of size 200

Test #31:

score: 0
Accepted
time: 6ms
memory: 4336kb

input:

500 20000
280 430
283 415
147 154
343 433
59 417
47 474
14 204
56 80
193 416
296 484
112 140
193 291
147 238
98 255
106 358
39 424
8 295
309 370
96 132
68 432
237 454
69 119
98 218
308 343
12 372
105 272
147 421
108 110
121 161
16 44
225 286
17 328
327 329
72 170
52 260
295 302
170 347
20 281
37 66
...

output:

200
1 80 142 4 86 290 39 453 94 10 12 225 253 15 352 240 190 19 193 485 237 23 298 191 262 27 98 278 113 31 65 476 34 373 36 270 172 465 58 42 484 44 219 46 47 48 433 106 51 52 241 384 432 428 337 325 391 230 62 85 66 67 441 319 71 72 121 386 266 455 78 397 108 464 83 333 87 89 90 101 92 449 139 228...

result:

ok vertex cover of size 200

Test #32:

score: 0
Accepted
time: 19ms
memory: 5024kb

input:

500 50000
103 130
189 432
290 497
46 337
113 237
249 333
162 376
181 272
30 101
58 192
252 362
374 424
85 322
201 432
163 340
74 99
69 424
189 416
160 343
235 425
70 304
50 322
21 370
38 338
395 469
141 468
146 471
282 497
249 265
131 292
6 417
239 326
243 347
155 167
130 209
17 302
189 222
100 291
...

output:

200
239 269 92 4 5 312 370 54 388 10 372 314 13 14 163 16 17 18 19 20 308 22 60 126 391 26 406 283 72 30 31 32 33 322 121 36 37 258 176 40 411 42 450 44 45 46 392 430 49 236 82 116 63 216 156 460 88 138 62 193 65 367 67 70 71 325 154 341 76 364 182 159 80 81 83 485 306 492 89 145 378 93 94 96 499 29...

result:

ok vertex cover of size 200

Test #33:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

10 20
8 9
1 4
7 9
9 10
3 4
2 4
2 9
4 9
2 7
6 9
2 6
4 10
2 3
1 2
5 9
4 6
4 5
2 8
4 8
2 5

output:

3
4 2 9

result:

ok vertex cover of size 3

Test #34:

score: 0
Accepted
time: 0ms
memory: 3556kb

input:

10 15
6 10
7 10
6 7
3 7
2 3
8 10
2 8
4 10
4 7
1 7
2 9
7 8
2 7
2 6
2 10

output:

3
7 2 10

result:

ok vertex cover of size 3

Test #35:

score: 0
Accepted
time: 0ms
memory: 3672kb

input:

10 33
1 4
1 3
4 6
3 10
1 9
6 7
4 10
3 8
4 5
8 10
7 9
3 7
4 8
6 8
2 4
4 7
9 10
2 7
2 5
2 8
7 10
2 10
1 6
8 9
5 10
6 10
2 3
2 9
1 8
1 10
3 4
7 8
1 2

output:

6
1 2 4 10 7 8

result:

ok vertex cover of size 6

Test #36:

score: 0
Accepted
time: 0ms
memory: 3608kb

input:

10 21
2 10
6 9
5 6
2 5
1 9
3 4
7 8
5 10
1 7
8 10
6 7
3 10
4 5
6 8
3 5
3 9
5 8
2 9
4 6
5 7
7 9

output:

6
7 10 3 9 5 6

result:

ok vertex cover of size 6

Test #37:

score: 0
Accepted
time: 0ms
memory: 3680kb

input:

100 70
8 82
29 50
29 54
65 97
42 43
4 65
42 84
8 16
17 42
62 65
40 82
12 65
65 99
29 86
29 41
56 65
8 58
32 42
63 85
42 64
65 71
45 65
63 95
22 29
63 87
16 29
24 29
34 42
42 50
46 82
78 82
10 42
52 82
29 94
42 89
42 82
39 82
29 45
42 91
39 63
42 70
29 81
8 51
61 65
8 47
72 82
65 98
31 63
82 98
42 60...

output:

6
65 8 42 29 63 82

result:

ok vertex cover of size 6

Test #38:

score: 0
Accepted
time: 0ms
memory: 3912kb

input:

100 222
77 94
75 77
40 87
36 53
21 46
46 56
46 75
31 74
43 77
41 77
67 77
77 81
4 100
55 86
47 77
65 71
58 75
49 94
27 78
32 36
46 94
4 77
42 77
7 71
40 72
1 27
37 93
22 40
50 77
46 74
77 92
86 93
27 59
77 80
36 70
53 100
4 73
77 98
32 55
53 93
34 100
66 93
62 93
72 77
73 77
69 71
40 88
36 57
52 94
...

output:

13
46 40 4 31 55 36 71 58 93 94 77 27 100

result:

ok vertex cover of size 13

Test #39:

score: 0
Accepted
time: 1ms
memory: 3652kb

input:

100 1000
22 84
10 46
40 91
10 49
29 89
6 18
5 7
49 76
73 83
42 56
67 82
26 31
49 50
55 100
26 52
68 80
26 61
40 43
39 46
72 99
4 91
6 67
4 61
25 99
54 65
58 99
46 68
51 93
54 94
33 85
16 84
45 75
76 84
25 61
50 84
31 71
26 69
61 100
86 100
10 51
31 82
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47 69
24 69
66 99
7 75
21 31
39 51
69 79
3...

output:

30
91 100 45 13 68 6 7 10 50 18 83 31 69 46 65 94 78 85 82 92 51 56 40 89 52 61 57 84 76 99

result:

ok vertex cover of size 30

Test #40:

score: 0
Accepted
time: 1ms
memory: 3672kb

input:

100 1500
7 71
5 24
13 88
69 89
62 78
1 19
90 96
6 76
54 78
17 20
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24 89
28 97
14 48
29 53
25 67
5 89
28 46
7 89
60 67
16 25
3 69
1 84
16 99
15 88
6 79
28 100
27 60
7 53
60 61
54 61
24 30
22 41
78 92
70 94
42 86
27 34
45 100
25 34
59 67
37 53
34 68
25 48
76 77
65 78
24 80
17 54...

output:

38
1 34 3 74 5 15 39 55 59 14 54 88 16 17 18 30 87 78 79 45 89 25 90 28 41 80 53 71 76 75 44 57 63 60 92 64 70 86

result:

ok vertex cover of size 38

Test #41:

score: 0
Accepted
time: 0ms
memory: 3680kb

input:

100 200
30 77
23 42
4 5
47 67
5 67
4 67
42 98
15 65
40 62
74 77
4 34
42 88
40 100
40 50
49 63
56 77
40 81
59 63
33 90
65 80
31 40
4 95
4 24
17 90
9 54
40 75
1 77
63 84
51 65
40 89
31 65
40 98
65 74
16 67
61 67
67 83
54 89
40 71
54 59
29 63
47 63
4 62
13 67
4 17
63 85
42 62
57 90
78 90
85 90
4 69
14 ...

output:

9
77 4 67 42 65 63 54 90 40

result:

ok vertex cover of size 9

Test #42:

score: 0
Accepted
time: 1ms
memory: 3932kb

input:

100 542
13 26
6 84
55 96
54 89
22 76
21 33
54 83
39 47
14 95
54 100
21 99
34 35
9 47
32 99
12 42
72 89
72 97
55 73
13 22
39 86
21 50
63 89
48 56
83 89
72 84
69 72
53 77
29 82
31 63
13 48
38 84
54 91
4 13
12 67
69 82
34 54
29 76
53 93
70 98
54 94
41 84
7 39
31 83
56 61
12 96
10 39
3 94
53 79
72 88
83...

output:

26
55 21 46 54 14 53 92 12 9 39 13 77 31 86 34 84 56 22 89 94 64 72 29 70 99 82

result:

ok vertex cover of size 26

Test #43:

score: 0
Accepted
time: 1ms
memory: 3736kb

input:

100 1320
55 58
21 34
3 51
14 38
1 70
8 89
79 97
19 57
60 86
35 64
10 50
73 76
12 66
18 32
95 100
65 71
12 44
26 100
15 50
26 38
1 58
12 41
75 86
23 42
2 44
35 90
70 88
15 66
18 59
28 87
32 78
17 54
43 53
56 66
40 96
5 75
34 97
6 59
62 66
9 85
2 38
23 75
12 80
86 95
4 42
3 66
17 71
68 73
50 89
30 84
...

output:

50
1 2 3 4 45 6 32 8 56 72 11 12 88 79 40 57 86 18 21 22 23 30 25 26 73 94 31 34 35 53 38 69 41 93 44 46 59 97 50 66 54 55 87 61 75 67 71 80 85 100

result:

ok vertex cover of size 50

Test #44:

score: 0
Accepted
time: 1ms
memory: 4004kb

input:

100 2530
81 86
11 29
75 96
10 24
57 92
47 73
67 96
4 61
23 99
3 84
1 18
78 96
20 23
4 97
1 73
45 74
12 43
33 100
8 43
1 86
40 77
33 58
21 95
7 28
23 46
77 88
25 33
14 60
8 85
24 48
37 90
54 60
59 78
51 85
14 73
48 79
8 41
19 87
58 81
56 60
56 81
26 44
21 32
33 85
64 85
42 85
64 96
41 91
8 96
43 94
4...

output:

44
1 41 3 4 33 80 7 8 28 10 11 85 15 20 18 24 90 23 31 39 95 30 32 96 81 60 37 44 43 45 47 87 62 51 52 77 55 78 61 79 92 68 76 73

result:

ok vertex cover of size 44

Test #45:

score: 0
Accepted
time: 0ms
memory: 3592kb

input:

500 700
163 469
134 331
95 134
72 185
46 185
131 163
163 263
185 398
185 343
188 265
134 260
134 176
76 185
134 273
163 389
185 218
265 398
185 323
134 315
112 163
185 393
163 441
185 273
134 174
163 323
108 265
163 299
134 333
92 134
198 265
75 265
265 277
163 492
134 436
265 413
134 181
185 309
9 ...

output:

4
185 265 134 163

result:

ok vertex cover of size 4

Test #46:

score: 0
Accepted
time: 0ms
memory: 3988kb

input:

500 2222
83 129
167 330
115 388
206 469
39 398
220 325
214 232
119 315
68 348
168 246
348 370
209 395
173 251
12 266
88 206
206 246
14 218
233 392
101 300
209 453
195 233
129 391
88 168
23 346
119 300
57 230
298 388
99 300
97 230
138 408
183 329
243 447
250 315
330 397
216 266
15 168
149 233
120 233...

output:

23
388 214 39 346 315 6 447 206 329 14 129 330 230 173 325 233 408 209 348 300 429 266 168

result:

ok vertex cover of size 23

Test #47:

score: 0
Accepted
time: 5ms
memory: 3892kb

input:

500 10000
188 494
326 448
330 493
239 259
89 130
173 383
250 445
181 380
176 395
112 320
52 228
30 317
383 392
52 212
238 363
92 490
192 208
91 188
88 363
97 419
131 141
186 500
289 411
3 50
240 443
26 112
70 238
55 178
56 94
37 231
119 174
52 402
210 258
131 349
65 493
11 390
12 418
43 397
11 498
2...

output:

100
10 192 3 348 5 392 297 335 351 11 12 188 14 193 88 404 360 450 352 220 334 185 41 104 174 43 350 373 464 493 258 326 407 444 422 311 435 274 323 445 45 389 263 275 259 140 359 52 119 131 55 56 443 58 59 490 371 181 175 269 156 91 383 336 182 231 238 319 434 130 186 210 85 305 310 395 133 317 261...

result:

ok vertex cover of size 100

Test #48:

score: 0
Accepted
time: 14ms
memory: 5836kb

input:

500 89505
63 230
260 427
211 269
185 348
394 402
142 308
48 186
123 257
7 496
74 227
97 274
156 175
212 279
174 329
10 293
56 221
11 187
48 70
19 203
128 305
22 179
183 402
457 493
89 233
174 472
1 457
258 338
180 305
5 79
125 227
79 499
350 353
140 162
81 451
64 387
284 376
24 182
299 327
66 396
71...

output:

234
267 2 3 4 5 6 7 8 9 462 11 104 13 310 72 485 86 89 19 254 21 219 23 434 123 26 285 136 30 385 352 144 34 433 207 38 39 40 340 42 218 45 295 47 48 298 50 51 166 259 143 55 56 57 87 112 210 357 427 64 110 66 67 126 159 71 145 463 79 456 77 447 80 460 82 187 279 376 88 90 392 129 389 492 95 96 209 ...

result:

ok vertex cover of size 234

Test #49:

score: 0
Accepted
time: 1ms
memory: 3956kb

input:

500 900
7 417
97 388
305 372
102 220
62 351
161 264
191 239
84 244
391 460
245 358
89 303
129 138
64 355
121 200
197 325
35 436
131 375
74 148
171 305
191 388
84 151
329 492
16 444
16 347
24 324
92 376
248 388
231 398
189 409
320 392
301 485
422 490
275 500
36 454
41 221
252 490
162 215
35 445
214 3...

output:

181
1 2 3 4 357 6 7 8 9 10 167 12 168 190 222 16 17 240 474 187 21 41 62 95 312 346 58 265 30 302 414 255 445 36 348 440 39 40 263 141 335 227 291 467 352 328 89 247 146 54 55 56 325 282 60 61 277 64 207 66 154 68 139 395 200 202 148 75 292 371 78 308 324 311 287 84 85 228 165 392 117 206 92 301 94 ...

result:

ok vertex cover of size 181

Test #50:

score: 0
Accepted
time: 1ms
memory: 3952kb

input:

500 3222
459 494
86 232
124 377
147 320
195 230
479 496
58 364
290 324
195 389
19 424
5 324
134 309
88 489
99 489
195 497
98 109
387 489
140 239
119 150
70 424
309 355
34 195
489 497
29 425
98 463
455 496
310 489
98 316
214 309
437 496
359 494
119 253
361 377
13 364
22 51
377 404
424 455
310 494
316...

output:

17
195 98 496 147 377 86 250 425 494 489 119 364 309 424 239 324 22

result:

ok vertex cover of size 17

Test #51:

score: 0
Accepted
time: 5ms
memory: 3932kb

input:

500 9900
68 260
76 109
427 464
109 464
364 436
259 427
138 371
108 477
52 148
38 363
172 422
142 197
392 425
15 339
99 226
99 228
25 118
81 336
15 72
252 336
265 480
73 498
113 337
418 468
169 272
380 494
273 336
45 69
189 290
9 95
155 159
45 64
95 227
345 446
48 494
148 151
93 439
192 354
13 267
26...

output:

91
477 138 290 226 73 113 116 489 380 260 244 44 435 29 15 213 72 367 217 484 425 22 23 301 25 345 363 233 486 64 427 430 34 357 248 234 124 240 142 84 336 257 45 410 295 379 159 479 127 148 66 458 67 109 57 165 422 176 91 99 135 86 236 75 178 278 468 354 95 494 100 416 158 334 223 93 471 495 192 26...

result:

ok vertex cover of size 91

Test #52:

score: 0
Accepted
time: 21ms
memory: 5804kb

input:

500 86247
121 224
151 297
213 289
12 408
112 284
128 369
234 499
195 396
268 305
158 500
247 299
358 403
330 375
71 212
78 477
12 463
220 457
322 384
191 286
111 437
223 495
419 464
2 447
292 303
149 474
250 326
108 150
61 346
292 333
121 258
223 231
81 90
150 389
178 266
127 331
14 346
28 291
432 4...

output:

222
464 2 89 494 5 6 340 211 9 65 349 12 85 14 15 492 17 455 333 31 433 112 220 25 26 389 28 497 30 176 443 34 178 36 105 39 40 295 351 44 187 466 47 435 49 66 51 82 53 192 55 56 155 58 293 250 133 223 64 499 384 69 70 331 447 74 75 361 238 78 79 80 81 186 84 86 410 240 337 92 93 301 95 274 97 376 4...

result:

ok vertex cover of size 222

Test #53:

score: -100
Wrong Answer
time: 0ms
memory: 3604kb

input:

7 15
3 6
1 2
5 6
2 6
2 7
1 5
3 5
1 3
2 5
3 4
3 7
2 4
4 7
5 7
1 4

output:

not smol

result:

wrong answer vertex cover is smol, but participant did not print it
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伺服器時間: 2024-12-05 04:33:40 | 開源專案