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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#421427#961. Smol Vertex CovercqbzlyWA 1296ms6764kbC++203.7kb2024-05-25 18:35:132024-05-25 18:35:14

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你现在查看的是最新测评结果

  • [2024-05-25 18:35:14]
  • 评测
  • 测评结果：WA
  • 用时：1296ms
  • 内存：6764kb
查看
  • [2024-05-25 18:35:13]
  • 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(time(0));
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 k=1;k<=100;k++){
			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;
			}
		}
//		cout<<cnt<<"\n";
//		 for(int i=1;i<=cnt;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<=n;i++){
				init();
				if(to[i]){
					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;
					}
				}
				else{
					for(int j=1;j<=m;j++){
						int u=a[j].fi,v=a[j].se;
						if(u==i||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";
						cout<<i<<" ";
						for(int j=1;j<=cnt;j++){
							if(fk[j]<fk[j+cnt])cout<<p[j].fi<<" ";
							else cout<<p[j].se<<" ";
						}
						cout<<"\n";
						break;
					}
				}
			}
			if(!flg)cout<<"not smol"<<"\n";
		}
//	}
}
Source code, Language: C++20

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 3704kb

input:

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

output:

3
1 2 4

result:

ok vertex cover of size 3

Test #2:

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

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: 1ms
memory: 3684kb

input:

3 0

output:

0

result:

ok vertex cover of size 0

Test #4:

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

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: 3656kb

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 2 6 8 10 7

result:

ok vertex cover of size 6

Test #6:

score: 0
Accepted
time: 1ms
memory: 3656kb

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: 3736kb

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: 3748kb

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: 2ms
memory: 3720kb

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: 0ms
memory: 4008kb

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: 12ms
memory: 3832kb

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: 3964kb

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 39 109 43 44 242 46 86 49 50 285 52 54 55 394 481 313 60 64 459 67 68 483 188 73 76 78 208 294 82 85 91 92 95 96 99 101 201 107 395 110 113 183 115 116 118 120 121 122 443 127 128 345 159 470 140 421 403 146 370 260 151 152 179 1...

result:

ok vertex cover of size 147

Test #13:

score: 0
Accepted
time: 9ms
memory: 3728kb

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: 29ms
memory: 3976kb

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: 673ms
memory: 6764kb

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: 3704kb

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: 3700kb

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 7 3 18 12 16 8 9 10 13

result:

ok vertex cover of size 10

Test #18:

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

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 3 7 8 6 18 10 11 12 13

result:

ok vertex cover of size 10

Test #19:

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

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 48 103 57 24 100 47

result:

ok vertex cover of size 10

Test #20:

score: 0
Accepted
time: 4ms
memory: 3728kb

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
15 21 81 10 51 8 69 43 18 53

result:

ok vertex cover of size 10

Test #21:

score: 0
Accepted
time: 6ms
memory: 3732kb

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
8 106 42 96 95 34 25 87 102 109

result:

ok vertex cover of size 10

Test #22:

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

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 93 3 4 5 178 7 191 188 10 12 42 63 15 72 132 81 137 20 55 61 24 25 26 41 167 62 116 32 142 49 156 109 37 38 39 43 44 45 46 47 67 78 51 52 158 118 112 64 106 65 174 170 128 73 117 135 125 127 123 185 84 171 86 87 88 89 90 91 145 139 100 104 105 173 155 144 111 195 157 119 150 121 122 124 126 12...

result:

ok vertex cover of size 100

Test #23:

score: 0
Accepted
time: 1ms
memory: 4060kb

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 11 3 4 165 29 55 8 119 12 178 61 86 16 91 82 19 142 28 78 23 24 25 26 27 30 31 60 186 35 36 105 58 155 159 51 43 152 45 46 64 48 49 53 103 114 57 195 62 75 73 189 118 83 115 70 71 157 187 154 80 112 85 87 88 89 164 193 158 113 135 101 199 104 191 192 108 169 111 116 153 173 172 128 190 133 138...

result:

ok vertex cover of size 100

Test #24:

score: 0
Accepted
time: 1ms
memory: 4272kb

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 2 194 86 5 36 7 41 54 10 11 137 98 120 159 16 141 148 19 20 21 181 38 24 178 30 28 29 31 32 140 128 146 37 57 190 42 118 185 195 46 52 61 163 135 60 67 104 58 59 62 183 65 139 69 133 72 73 75 110 199 171 79 80 81 123 83 85 177 127 89 105 91 155 100 116 130 108 109 111 112 152 115 117 119 176 1...

result:

ok vertex cover of size 100

Test #25:

score: 0
Accepted
time: 7ms
memory: 3688kb

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
399 424 63 280 375 239 188 449 95 342

result:

ok vertex cover of size 10

Test #26:

score: 0
Accepted
time: 8ms
memory: 3752kb

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
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output:

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result:

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Test #27:

score: 0
Accepted
time: 31ms
memory: 3844kb

input:

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output:

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result:

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Test #28:

score: 0
Accepted
time: 2ms
memory: 3756kb

input:

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output:

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result:

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Test #29:

score: 0
Accepted
time: 156ms
memory: 4080kb

input:

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output:

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result:

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Test #30:

score: 0
Accepted
time: 278ms
memory: 3968kb

input:

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output:

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result:

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Test #31:

score: 0
Accepted
time: 578ms
memory: 4384kb

input:

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output:

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result:

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Test #32:

score: 0
Accepted
time: 1296ms
memory: 5124kb

input:

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output:

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result:

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Test #33:

score: 0
Accepted
time: 1ms
memory: 3948kb

input:

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output:

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result:

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Test #34:

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

input:

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output:

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result:

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Test #35:

score: 0
Accepted
time: 0ms
memory: 3708kb

input:

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output:

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result:

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Test #36:

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

input:

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output:

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result:

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Test #37:

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

input:

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output:

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result:

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Test #38:

score: 0
Accepted
time: 2ms
memory: 3712kb

input:

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output:

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result:

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Test #39:

score: 0
Accepted
time: 10ms
memory: 3976kb

input:

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output:

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result:

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Test #40:

score: 0
Accepted
time: 10ms
memory: 3768kb

input:

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output:

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result:

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Test #41:

score: 0
Accepted
time: 2ms
memory: 3660kb

input:

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output:

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result:

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Test #42:

score: 0
Accepted
time: 4ms
memory: 3728kb

input:

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output:

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result:

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Test #43:

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

input:

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output:

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result:

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Test #44:

score: 0
Accepted
time: 9ms
memory: 3876kb

input:

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output:

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result:

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Test #45:

score: 0
Accepted
time: 0ms
memory: 3900kb

input:

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output:

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result:

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Test #46:

score: 0
Accepted
time: 53ms
memory: 3936kb

input:

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output:

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result:

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Test #47:

score: 0
Accepted
time: 359ms
memory: 4008kb

input:

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output:

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result:

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Test #48:

score: 0
Accepted
time: 683ms
memory: 5888kb

input:

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output:

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result:

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Test #49:

score: 0
Accepted
time: 21ms
memory: 3984kb

input:

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output:

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result:

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Test #50:

score: 0
Accepted
time: 47ms
memory: 3804kb

input:

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output:

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result:

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Test #51:

score: 0
Accepted
time: 339ms
memory: 4052kb

input:

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output:

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result:

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Test #52:

score: 0
Accepted
time: 1055ms
memory: 5900kb

input:

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output:

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result:

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Test #53:

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

input:

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1 2
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output:

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result:

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Test #54:

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

input:

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1 2
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output:

4
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result:

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Test #55:

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

input:

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output:

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result:

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Test #56:

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

input:

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output:

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result:

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Test #57:

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

input:

100 88
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output:

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result:

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Test #58:

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

input:

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output:

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result:

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Test #59:

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

input:

150 218
7 41
31 149
60 93
64 137
95 127
53 121
31 129
105 127
15 93
104 113
10 11
52 103
34 100
35 71
20 39
2 4
126 136
98 134
89 132
75 124
53 111
107 136
9 83
81 106
54 77
18 107
3 115
10 138
81 126
1 53
10 116
39 43
89 105
19 110
17 70
24 126
4 121
40 46
3 138
106 124
137 149
91 123
74 139
56 134...

output:

70
1 2 3 4 59 6 7 8 9 10 70 14 16 107 75 125 22 128 100 25 117 62 80 129 31 48 33 81 71 38 39 122 123 51 46 110 134 50 140 103 53 54 55 112 57 61 64 104 72 73 139 93 85 86 130 89 90 105 95 150 143 98 119 124 146 116 137 133 126 141

result:

ok vertex cover of size 70

Test #60:

score: 0
Accepted
time: 2ms
memory: 4000kb

input:

200 771
1 3
1 8
1 15
1 24
1 35
1 48
1 63
1 80
1 99
1 120
1 143
1 168
1 195
2 7
2 14
2 23
2 34
2 47
2 62
2 79
2 98
2 119
2 142
2 167
2 194
3 6
3 13
3 22
3 33
3 46
3 61
3 78
3 97
3 118
3 141
3 166
3 193
4 5
4 12
4 21
4 32
4 45
4 60
4 77
4 96
4 117
4 140
4 165
4 192
5 11
5 20
5 31
5 44
5 59
5 76
5 95
5...

output:

not smol

result:

ok not smol

Test #61:

score: 0
Accepted
time: 1ms
memory: 3900kb

input:

200 332
107 175
70 76
127 193
108 191
183 189
140 178
80 90
21 193
115 155
10 12
69 176
101 188
30 41
23 116
70 197
40 71
71 155
13 153
145 177
38 48
54 115
96 135
118 175
110 167
157 180
5 125
106 175
77 139
52 148
168 175
110 120
4 133
91 191
101 160
59 92
41 158
91 97
36 181
44 107
146 162
3 28
5...

output:

not smol

result:

ok not smol

Test #62:

score: 0
Accepted
time: 4ms
memory: 3776kb

input:

219 885
1 3
1 8
1 15
1 24
1 35
1 48
1 63
1 80
1 99
1 120
1 143
1 168
1 195
2 7
2 14
2 23
2 34
2 47
2 62
2 79
2 98
2 119
2 142
2 167
2 194
3 6
3 13
3 22
3 33
3 46
3 61
3 78
3 97
3 118
3 141
3 166
3 193
4 5
4 12
4 21
4 32
4 45
4 60
4 77
4 96
4 117
4 140
4 165
4 192
5 11
5 20
5 31
5 44
5 59
5 76
5 95
5...

output:

not smol

result:

ok not smol

Test #63:

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

input:

222 276
106 214
40 143
2 138
194 199
139 217
4 208
137 219
41 125
49 190
78 94
63 219
65 141
44 93
123 151
117 132
150 210
148 183
124 219
4 47
133 196
46 82
144 151
77 219
27 113
139 197
52 112
69 148
68 106
32 147
145 206
166 203
93 211
70 142
103 217
30 177
38 108
160 194
69 111
158 180
26 172
14...

output:

97
82 2 112 4 5 179 7 150 9 10 11 14 88 43 16 145 18 131 20 133 27 23 24 132 26 178 29 177 31 32 33 117 35 37 38 39 40 125 206 89 77 174 137 59 52 83 55 60 172 196 142 64 141 204 190 69 85 72 122 78 138 80 81 157 215 91 93 94 95 96 166 165 103 104 106 107 114 201 115 181 121 123 189 170 199 135 139 ...

result:

ok vertex cover of size 97

Test #64:

score: 0
Accepted
time: 34ms
memory: 4104kb

input:

222 13624
111 180
5 112
145 215
139 173
38 130
38 184
7 17
113 165
128 216
133 177
29 172
64 106
24 156
156 171
62 127
45 138
139 157
59 69
57 84
119 146
164 178
130 190
123 125
12 195
42 169
13 219
69 92
130 147
23 40
78 88
101 102
128 217
69 183
69 131
196 203
47 189
126 221
49 64
49 124
40 62
54 ...

output:

not smol

result:

ok not smol

Test #65:

score: 0
Accepted
time: 3ms
memory: 3916kb

input:

222 905
1 3
1 8
1 15
1 24
1 35
1 48
1 63
1 80
1 99
1 120
1 143
1 168
1 195
2 7
2 14
2 23
2 34
2 47
2 62
2 79
2 98
2 119
2 142
2 167
2 194
3 6
3 13
3 22
3 33
3 46
3 61
3 78
3 97
3 118
3 141
3 166
3 193
3 222
4 5
4 12
4 21
4 32
4 45
4 60
4 77
4 96
4 117
4 140
4 165
4 192
4 221
5 11
5 20
5 31
5 44
5 59...

output:

not smol

result:

ok not smol

Test #66:

score: 0
Accepted
time: 1ms
memory: 3688kb

input:

100 0

output:

0

result:

ok vertex cover of size 0

Test #67:

score: 0
Accepted
time: 3ms
memory: 3700kb

input:

222 960
55 144
6 148
20 22
28 208
54 106
108 154
19 150
18 21
17 158
55 90
94 117
37 132
84 220
8 40
2 176
65 134
175 181
90 161
10 191
13 221
13 22
48 98
1 220
48 75
37 165
104 196
63 79
99 169
176 203
180 207
32 37
39 220
8 30
87 208
39 139
94 119
57 169
21 51
24 80
169 184
71 82
37 207
51 151
26 ...

output:

not smol

result:

ok not smol

Test #68:

score: 0
Accepted
time: 5ms
memory: 3776kb

input:

222 1611
43 217
138 208
124 136
12 193
98 203
94 141
36 90
38 151
151 186
13 217
62 125
80 151
91 136
86 172
36 176
74 128
47 167
171 184
129 182
151 155
120 198
151 210
51 200
24 128
184 201
185 208
96 98
23 203
26 198
151 191
76 153
68 160
73 111
13 151
75 164
9 151
119 189
32 151
101 151
143 212
...

output:

not smol

result:

ok not smol

Test #69:

score: 0
Accepted
time: 57ms
memory: 4464kb

input:

222 24531
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
1 56
1 57
1 58
1 59
1 60
1 6...

output:

not smol

result:

ok not smol

Test #70:

score: 0
Accepted
time: 1ms
memory: 3676kb

input:

222 222
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 ...

output:

111
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 101 103 105 107 109 111 113 115 117 119 121 123 125 127 129 131 133 135 137 139 141 143 145 147 149 151 153 155 157 159 161 163 165 167 169 171 173 175...

result:

ok vertex cover of size 111

Test #71:

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

input:

222 185
1 2
1 3
1 4
1 5
1 6
7 8
7 9
7 10
7 11
7 12
13 14
13 15
13 16
13 17
13 18
19 20
19 21
19 22
19 23
19 24
25 26
25 27
25 28
25 29
25 30
31 32
31 33
31 34
31 35
31 36
37 38
37 39
37 40
37 41
37 42
43 44
43 45
43 46
43 47
43 48
49 50
49 51
49 52
49 53
49 54
55 56
55 57
55 58
55 59
55 60
61 62
61 ...

output:

37
1 7 13 19 25 31 37 43 49 55 61 67 73 79 85 91 97 103 109 115 121 127 133 139 145 151 157 163 169 175 181 187 193 199 205 211 217

result:

ok vertex cover of size 37

Test #72:

score: 0
Accepted
time: 1ms
memory: 3708kb

input:

222 295
1 2
2 3
1 3
4 5
5 6
4 6
7 8
8 9
7 9
10 11
11 12
10 12
13 14
14 15
13 15
16 17
17 18
16 18
19 20
20 21
19 21
22 23
23 24
22 24
25 26
26 27
25 27
28 29
29 30
28 30
31 32
32 33
31 33
34 35
35 36
34 36
37 38
38 39
37 39
40 41
41 42
40 42
43 44
44 45
43 45
46 47
47 48
46 48
49 50
50 51
49 51
52 5...

output:

not smol

result:

ok not smol

Test #73:

score: 0
Accepted
time: 1ms
memory: 3972kb

input:

220 1034
1 2
1 3
1 4
1 5
1 8
1 9
1 10
1 11
1 12
1 14
1 15
1 16
1 17
1 18
1 19
1 20
2 4
2 8
2 9
2 10
2 12
2 14
2 15
2 16
2 17
2 18
2 19
2 20
3 5
3 8
3 15
4 5
4 8
4 10
4 15
4 16
4 18
4 19
5 6
5 8
5 9
5 10
5 11
5 12
5 13
5 14
5 15
5 16
5 17
5 19
5 20
6 8
7 8
7 19
8 9
8 10
8 12
8 14
8 15
8 16
8 17
8 18
...

output:

110
1 2 15 16 5 8 19 18 10 12 21 22 35 36 25 28 39 38 30 32 41 42 55 56 45 48 59 58 50 52 61 62 75 76 65 68 79 78 70 72 81 82 95 96 85 88 99 98 90 92 101 102 115 116 105 108 119 118 110 112 121 122 135 136 125 128 139 138 130 132 141 142 155 156 145 148 159 158 150 152 161 162 175 165 168 179 170 17...

result:

ok vertex cover of size 110

Test #74:

score: 0
Accepted
time: 1ms
memory: 3756kb

input:

200 664
1 2
1 3
1 8
1 10
1 15
1 21
1 22
1 24
1 27
1 35
1 38
1 40
1 50
2 3
2 17
2 18
2 19
2 32
2 43
2 46
3 5
3 7
3 10
3 29
3 34
3 36
3 37
3 38
3 44
4 7
4 9
4 14
4 15
4 29
4 30
4 33
4 41
4 47
5 7
5 19
5 22
5 34
5 35
5 38
5 42
6 27
7 15
7 21
7 27
7 29
7 35
7 38
7 43
7 47
7 50
8 29
8 40
8 46
9 29
9 31
1...

output:

100
1 2 3 4 35 27 7 8 10 11 22 29 38 31 19 44 21 23 42 25 28 30 36 34 47 51 52 53 54 85 77 57 58 60 61 88 79 69 81 75 94 71 72 73 92 78 80 86 84 97 101 102 103 104 135 127 107 108 110 130 111 138 129 147 131 134 119 144 121 122 123 142 125 128 136 151 152 153 154 185 177 157 158 160 161 172 179 188 ...

result:

ok vertex cover of size 100

Test #75:

score: 0
Accepted
time: 2ms
memory: 3952kb

input:

200 552
1 2
1 8
1 15
1 21
1 24
1 27
1 38
1 49
2 3
2 17
2 18
2 19
2 32
2 43
2 46
3 5
3 7
3 19
3 25
3 31
3 34
3 35
3 37
3 44
4 9
4 15
4 29
4 30
4 33
5 7
5 10
5 22
5 30
5 34
5 44
5 49
6 27
7 15
7 21
7 27
7 29
7 35
7 38
7 43
7 47
7 50
8 29
8 40
8 46
9 29
10 22
10 29
10 31
10 49
10 50
11 22
11 25
11 32
1...

output:

not smol

result:

ok not smol

Test #76:

score: 0
Accepted
time: 0ms
memory: 3696kb

input:

4 4
1 2
1 3
1 4
2 3

output:

2
1 2

result:

ok vertex cover of size 2

Test #77:

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

input:

209 261
1 2
1 9
1 10
2 5
2 6
3 4
3 9
3 10
4 7
4 8
5 6
5 8
7 8
19 20
12 20
11 20
16 19
15 19
17 18
12 18
11 18
14 17
13 17
15 16
13 16
13 14
21 22
21 29
21 30
22 25
22 26
23 24
23 29
23 30
24 27
24 28
25 26
25 28
27 28
31 32
31 33
31 36
32 33
32 34
34 37
34 38
35 36
35 37
39 40
39 47
39 48
40 43
40 4...

output:

not smol

result:

ok not smol

Test #78:

score: 0
Accepted
time: 6ms
memory: 3804kb

input:

222 1895
11 67
39 74
52 134
48 204
78 156
103 191
32 37
130 197
33 35
50 173
30 45
28 203
81 127
138 206
20 94
96 147
98 137
137 158
139 216
11 77
15 34
9 17
25 216
71 126
1 40
8 134
179 212
135 168
71 89
30 75
97 154
170 175
38 198
28 208
34 39
85 89
33 160
31 83
133 213
87 208
64 200
49 136
85 169...

output:

not smol

result:

ok not smol

Test #79:

score: 0
Accepted
time: 1ms
memory: 3780kb

input:

222 101
191 214
139 141
44 48
85 156
141 148
8 113
159 221
107 119
73 160
45 214
70 161
59 78
81 123
42 119
38 43
21 187
81 207
19 53
34 180
10 118
30 222
34 196
21 144
168 206
38 213
33 177
175 190
100 140
96 175
200 221
17 76
44 105
19 125
79 124
13 107
87 91
132 148
14 205
66 88
22 210
15 152
28 ...

output:

57
113 44 12 13 205 152 17 18 19 20 21 22 197 26 28 219 222 31 177 34 38 119 73 52 87 57 58 59 63 64 65 66 70 71 168 79 81 85 214 199 97 98 118 100 101 105 116 127 148 141 154 159 191 175 183 221 202

result:

ok vertex cover of size 57

Test #80:

score: 0
Accepted
time: 1ms
memory: 3940kb

input:

222 314
21 74
81 180
26 123
106 155
12 197
158 188
32 54
27 134
9 193
191 206
73 158
5 73
40 193
67 89
129 143
39 213
141 159
6 182
143 164
107 201
47 123
104 130
191 209
149 177
10 21
96 144
107 206
3 38
165 195
58 198
188 204
40 182
133 205
15 208
84 123
5 24
70 120
78 118
44 128
19 201
127 167
72...

output:

not smol

result:

ok not smol

Test #81:

score: 0
Accepted
time: 0ms
memory: 3732kb

input:

222 397
90 99
80 217
79 198
56 104
140 185
202 213
129 195
169 181
20 72
27 81
70 106
55 88
2 22
145 221
162 208
27 66
32 119
29 55
91 124
97 161
59 74
155 162
98 170
52 187
14 207
7 149
10 86
147 162
185 207
100 112
30 36
58 64
65 151
152 191
119 201
38 216
23 220
9 111
30 105
122 140
121 176
12 62...

output:

not smol

result:

ok not smol

Test #82:

score: 0
Accepted
time: 1ms
memory: 3748kb

input:

222 351
32 156
28 72
80 83
175 222
117 156
142 222
28 113
136 154
53 56
93 99
29 73
112 175
129 151
3 12
36 77
3 127
63 123
140 164
109 162
17 115
134 173
25 137
1 48
86 107
61 70
191 207
6 68
76 109
24 204
9 25
149 158
77 82
84 136
61 148
12 18
71 110
67 141
95 187
113 186
13 162
60 169
51 110
77 1...

output:

not smol

result:

ok not smol

Test #83:

score: 0
Accepted
time: 1ms
memory: 3724kb

input:

222 362
133 149
15 173
26 96
91 196
74 218
153 208
63 135
46 65
35 205
36 182
82 182
130 164
121 127
34 205
127 201
68 74
2 87
187 214
113 221
7 33
7 68
81 187
22 32
122 125
122 148
28 84
99 100
13 36
95 115
175 199
67 180
2 167
58 129
133 170
9 83
9 103
79 80
9 100
40 79
67 144
197 219
41 146
35 48...

output:

105
1 2 3 4 155 6 7 133 9 64 107 68 34 207 15 16 18 19 169 32 93 24 129 96 27 28 35 41 36 37 130 39 40 66 75 44 51 46 47 80 50 52 87 54 55 56 57 58 59 178 99 101 63 67 125 123 141 72 73 76 77 187 182 86 193 151 164 138 92 94 95 100 154 172 137 106 108 213 211 113 114 143 118 120 121 122 205 127 220 ...

result:

ok vertex cover of size 105

Test #84:

score: 0
Accepted
time: 1ms
memory: 3680kb

input:

222 259
2 4
3 6
1 5
4 5
1 3
1 4
3 5
7 10
11 12
8 9
9 10
8 11
8 10
9 11
13 17
14 18
15 16
15 17
16 18
16 17
15 18
20 23
22 24
19 21
19 23
21 22
21 23
19 22
28 30
25 29
26 27
27 28
25 26
26 28
25 27
31 32
33 34
35 36
31 35
34 36
31 36
34 35
37 38
39 41
40 42
38 40
41 42
38 42
40 41
45 46
44 47
43 48
4...

output:

111
1 4 3 10 9 11 17 18 15 19 23 22 25 26 28 31 34 36 38 41 40 43 47 46 49 53 52 58 56 59 61 62 66 67 68 69 75 76 78 79 80 84 85 90 89 91 92 94 102 100 99 103 105 107 109 110 112 118 116 117 121 124 125 127 128 131 133 134 135 139 141 144 148 146 149 151 155 154 159 158 162 163 165 167 169 170 172 1...

result:

ok vertex cover of size 111

Test #85:

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

input:

222 259
1 2
2 3
2 6
1 4
3 4
4 5
1 3
9 12
10 12
7 12
9 11
10 11
8 11
9 10
15 17
16 17
13 17
15 18
16 18
14 18
15 16
19 21
19 23
19 22
20 21
20 23
20 24
21 23
27 29
26 27
27 30
25 29
25 26
25 28
26 29
32 35
32 33
32 34
35 36
33 36
31 36
33 35
37 38
38 39
38 40
37 42
39 42
41 42
37 39
45 48
47 48
46 48...

output:

111
1 2 4 12 11 9 17 18 15 19 20 21 25 26 27 36 32 35 37 38 42 44 45 48 50 51 53 55 57 59 61 66 65 69 68 72 75 77 78 82 81 83 85 86 87 91 95 94 97 99 100 103 106 105 109 111 112 115 119 117 121 125 126 130 132 129 133 135 138 142 140 141 148 147 150 151 152 156 157 158 160 163 164 168 170 171 173 17...

result:

ok vertex cover of size 111

Test #86:

score: 0
Accepted
time: 0ms
memory: 3740kb

input:

222 259
5 6
1 6
2 6
3 4
1 4
2 4
1 2
7 12
7 9
7 10
8 11
9 11
10 11
9 10
15 17
15 18
14 15
13 16
13 18
13 14
14 18
20 23
20 21
20 24
19 22
21 22
22 24
21 24
26 27
25 27
27 29
28 30
25 30
29 30
25 29
31 34
34 35
34 36
32 33
33 35
33 36
35 36
37 40
40 42
40 41
38 39
39 42
39 41
41 42
43 46
43 48
43 44
4...

output:

111
1 4 6 7 11 9 13 14 15 22 20 21 25 27 30 34 33 35 40 39 42 43 44 45 49 53 54 55 57 58 61 66 64 67 69 70 73 74 77 79 81 83 88 86 90 91 94 96 102 98 101 103 105 106 109 114 111 117 116 120 121 126 124 130 129 131 137 135 138 140 141 142 145 147 148 154 153 155 157 160 161 163 167 166 169 173 172 17...

result:

ok vertex cover of size 111

Test #87:

score: 0
Accepted
time: 4ms
memory: 3916kb

input:

222 1164
107 130
176 216
154 215
72 76
17 210
76 180
15 200
14 93
46 157
88 93
57 96
90 209
95 167
66 132
20 212
142 188
143 219
38 40
37 65
55 114
14 131
43 93
75 76
93 195
7 127
14 102
93 123
183 221
132 200
57 134
114 117
93 162
89 93
41 93
119 142
129 172
103 138
32 57
134 155
23 143
51 112
35 8...

output:

not smol

result:

ok not smol

Test #88:

score: -100
Wrong Answer
time: 64ms
memory: 4300kb

input:

222 12321
204 207
142 183
48 58
197 198
12 25
148 163
62 143
132 179
112 191
55 80
71 115
57 119
57 162
31 35
2 176
31 186
12 73
63 86
42 220
156 197
130 204
130 142
27 94
94 136
51 170
54 93
119 191
159 183
26 141
47 127
63 205
192 199
133 172
31 152
100 182
54 69
52 160
72 89
25 196
68 183
16 203
...

output:

not smol

result:

wrong answer vertex cover is smol, but participant did not print it
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Server Time: 2024-12-04 19:37:57 | OpenSource Project