CSES - Datatähti 2020 loppu - Results
Submission details
Task:Kierrokset
Sender:Valtteri Aurela
Submission time:2020-02-09 13:17:20 +0200
Language:C++ (C++11)
Status:READY
Result:26
Feedback
groupverdictscore
#10
#20
#3ACCEPTED26
#40
Test results
testverdicttimegroup
#10.02 s1, 2, 4details
#20.02 s1, 4details
#30.02 s1, 4details
#40.02 s1, 4details
#50.02 s2, 4details
#60.02 s4details
#70.02 s4details
#80.02 s4details
#90.02 s2, 4details
#100.02 s4details
#110.02 s4details
#120.02 s4details
#130.02 s2, 4details
#140.02 s4details
#150.02 s4details
#160.02 s4details
#170.03 s2, 4details
#180.03 s4details
#190.03 s4details
#200.03 s4details
#210.04 s2, 4details
#220.05 s4details
#230.04 s4details
#240.05 s4details
#250.14 s2, 4details
#260.19 s4details
#270.19 s4details
#280.19 s4details
#29ACCEPTED0.02 s1, 2, 3, 4details
#30ACCEPTED0.02 s1, 2, 3, 4details
#31ACCEPTED0.02 s1, 2, 3, 4details
#320.02 s1, 2, 4details
#33ACCEPTED0.02 s1, 2, 3, 4details
#340.02 s1, 2, 4details
#350.02 s1, 2, 4details
#36ACCEPTED0.02 s1, 3, 4details
#370.02 s1, 4details
#380.02 s1, 4details
#390.02 s1, 4details
#400.02 s1, 4details
#410.02 s1, 4details
#420.02 s1, 4details
#430.02 s1, 4details
#440.02 s1, 4details
#450.02 s1, 4details
#460.02 s1, 2, 4details
#47ACCEPTED0.02 s1, 2, 3, 4details
#48ACCEPTED0.02 s1, 2, 3, 4details
#490.02 s1, 2, 4details
#500.02 s1, 4details
#510.18 s2, 4details
#52ACCEPTED0.18 s2, 3, 4details
#53ACCEPTED0.18 s2, 3, 4details
#54ACCEPTED0.17 s2, 3, 4details
#550.17 s2, 4details
#560.18 s2, 4details
#570.17 s2, 4details
#580.17 s2, 4details
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#600.17 s2, 4details
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#73ACCEPTED0.23 s3, 4details
#74ACCEPTED0.23 s3, 4details
#75ACCEPTED0.23 s3, 4details
#76ACCEPTED0.23 s3, 4details
#77ACCEPTED0.23 s3, 4details
#78ACCEPTED0.23 s3, 4details
#79ACCEPTED0.23 s3, 4details
#80ACCEPTED0.23 s3, 4details
#81ACCEPTED0.23 s3, 4details
#82ACCEPTED0.23 s3, 4details
#830.22 s2, 4details
#840.22 s2, 4details
#850.02 s1, 2, 4details
#860.02 s1, 2, 4details

Code

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
vector<ll> graph[1010101];
ll vaihtoehdot[1010101];
ll vaihtoehdot2[1010101];
ll n;
ll x;
ll y;
ll a;
ll b;
ll big = 1e9+7;
void rekursio(ll nyky, ll ede){
	for(auto seur : graph[nyky]){
		if(ede == seur) continue;
		rekursio(seur, nyky);
		vaihtoehdot[nyky] *= (vaihtoehdot[seur]+1);
		vaihtoehdot[nyky] = vaihtoehdot[nyky] % big;
	}
}
void rekursio2(ll nyky, ll ede){
	for(auto seur : graph[nyky]){
		if(ede == seur || seur == y){
			continue;
		}
		rekursio2(seur, nyky);
		vaihtoehdot2[nyky] *= vaihtoehdot2[seur]+1;
	}
}

int main(){
	cin >> n;
	cin >> x;
	cin >> y;
	for(ll i = 1; i <= n-1; i++){
		vaihtoehdot[i] = 1;
		vaihtoehdot2[i] = 1;
		cin >> a >> b;
		graph[a].push_back(b);
		graph[b].push_back(a);
	}
	vaihtoehdot[n] = 1;
	vaihtoehdot2[n] = 1;
	vaihtoehdot2[y] = 0;
	rekursio(x,0);
	rekursio2(x,0);
	for(ll i = 1; i <= n; i++){
//		cout << i << ": " << vaihtoehdot[i] << "\n";
	}
	cout << "\n\n";
	for(ll i = 1; i <= n; i++){
//		cout << i << ": " << vaihtoehdot2[i] << "\n";
	}
	//cout << vaihtoehdot[x] - vaihtoehdot2[x] << "\n";
	cout << vaihtoehdot[x] % big << "\n";
}

Test details

Test 1

Group: 1, 2, 4

Verdict:

input
10 5 6
1 2
2 3
3 4
4 5
...

correct output
25

user output


30

Test 2

Group: 1, 4

Verdict:

input
10 8 1
10 7
7 3
8 7
10 9
...

correct output
36

user output


91

Test 3

Group: 1, 4

Verdict:

input
10 10 5
1 6
2 6
2 4
7 2
...

correct output
36

user output


76

Test 4

Group: 1, 4

Verdict:

input
10 7 9
9 6
9 1
1 8
9 2
...

correct output
48

user output


54

Test 5

Group: 2, 4

Verdict:

input
50 46 14
1 2
2 3
3 4
4 5
...

correct output
70

user output


230

Test 6

Group: 4

Verdict:

input
50 49 14
27 13
27 50
5 27
30 5
...

correct output
535291010

user output


605873037

Test 7

Group: 4

Verdict:

input
50 46 18
24 45
3 24
24 25
32 45
...

correct output
250065865

user output


604304034

Test 8

Group: 4

Verdict:

input
50 39 9
4 50
5 50
4 28
17 4
...

correct output
145500013

user output


552788912

Test 9

Group: 2, 4

Verdict:

input
250 166 226
1 2
2 3
3 4
4 5
...

correct output
4150

user output


14110

Test 10

Group: 4

Verdict:

input
250 104 224
118 137
189 118
127 189
132 189
...

correct output
230001327

user output


556695895

Test 11

Group: 4

Verdict:

input
250 20 113
100 108
220 108
220 228
62 108
...

correct output
734434924

user output


244561159

Test 12

Group: 4

Verdict:

input
250 116 21
221 16
221 223
22 16
16 79
...

correct output
273467702

user output


803138836

Test 13

Group: 2, 4

Verdict:

input
1250 556 801
1 2
2 3
3 4
4 5
...

correct output
250200

user output


386420

Test 14

Group: 4

Verdict:

input
1250 1115 100
952 651
952 289
166 952
166 871
...

correct output
600544658

user output


932868151

Test 15

Group: 4

Verdict:

input
1250 657 79
13 420
13 346
13 287
1210 420
...

correct output
813695503

user output


825988628

Test 16

Group: 4

Verdict:

input
1250 214 271
522 351
140 351
805 351
522 431
...

correct output
212897427

user output


99005489

Test 17

Group: 2, 4

Verdict:

input
6250 4685 392
1 2
2 3
3 4
4 5
...

correct output
613872

user output


7336710

Test 18

Group: 4

Verdict:

input
6250 5270 5866
5282 4610
5282 1160
4610 1967
2502 5282
...

correct output
423709118

user output


953064125

Test 19

Group: 4

Verdict:

input
6250 6162 514
4663 2181
6136 2181
6136 3161
3161 2803
...

correct output
949879698

user output


344987953

Test 20

Group: 4

Verdict:

input
6250 1522 4950
1937 2721
4518 2721
1937 2231
1937 771
...

correct output
152101730

user output


293732747

Test 21

Group: 2, 4

Verdict:

input
31250 28710 19769
1 2
2 3
3 4
4 5
...

correct output
50233029

user output


72952110

Test 22

Group: 4

Verdict:

input
31250 27848 22747
16893 8747
18910 16893
30376 16893
23945 18910
...

correct output
522494382

user output


842143647

Test 23

Group: 4

Verdict:

input
31250 6703 20415
23779 14085
23779 9341
14085 28511
14085 23151
...

correct output
615059214

user output


746420971

Test 24

Group: 4

Verdict:

input
31250 26948 21755
344 12546
12546 11641
11641 1883
9152 12546
...

correct output
614062321

user output


915814053

Test 25

Group: 2, 4

Verdict:

input
156250 71359 63141
1 2
2 3
3 4
4 5
...

correct output
360165737

user output


57808186

Test 26

Group: 4

Verdict:

input
156250 132945 97315
139434 74332
121914 74332
31473 121914
20412 139434
...

correct output
901028288

user output


690471035

Test 27

Group: 4

Verdict:

input
156250 85489 5733
140340 76749
140340 98734
76749 30645
76749 72109
...

correct output
38533849

user output


723239810

Test 28

Group: 4

Verdict:

input
156250 143710 49348
65050 143666
143666 47977
143666 35254
47977 99013
...

correct output
615178214

user output


267464517

Test 29

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
1 1 1

correct output
1

user output


1

Test 30

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
2 1 1
1 2

correct output
2

user output


2

Test 31

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
2 2 2
1 2

correct output
2

user output


2

Test 32

Group: 1, 2, 4

Verdict:

input
2 1 2
1 2

correct output
1

user output


2

Test 33

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
3 2 2
1 2
2 3

correct output
4

user output


4

Test 34

Group: 1, 2, 4

Verdict:

input
3 1 2
1 2
2 3

correct output
2

user output


3

Test 35

Group: 1, 2, 4

Verdict:

input
3 1 3
1 2
2 3

correct output
1

user output


3

Test 36

Group: 1, 3, 4

Verdict: ACCEPTED

input
10 4 4
1 2
1 3
3 4
1 5
...

correct output
99

user output


99

Test 37

Group: 1, 4

Verdict:

input
10 7 2
1 2
1 3
1 4
2 5
...

correct output
32

user output


52

Test 38

Group: 1, 4

Verdict:

input
10 2 4
1 2
1 3
1 4
2 5
...

correct output
72

user output


114

Test 39

Group: 1, 4

Verdict:

input
10 4 8
1 2
2 3
3 4
2 5
...

correct output
32

user output


58

Test 40

Group: 1, 4

Verdict:

input
10 3 1
1 2
1 3
1 4
2 5
...

correct output
108

user output


109

Test 41

Group: 1, 4

Verdict:

input
10 7 8
1 2
2 3
2 4
3 5
...

correct output
15

user output


49

Test 42

Group: 1, 4

Verdict:

input
10 4 10
1 2
1 3
3 4
4 5
...

correct output
40

user output


80

Test 43

Group: 1, 4

Verdict:

input
10 3 1
1 2
2 3
2 4
2 5
...

correct output
96

user output


130

Test 44

Group: 1, 4

Verdict:

input
10 6 2
1 2
1 3
2 4
3 5
...

correct output
40

user output


41

Test 45

Group: 1, 4

Verdict:

input
10 2 1
1 2
1 3
3 4
4 5
...

correct output
30

user output


31

Test 46

Group: 1, 2, 4

Verdict:

input
10 1 10
1 2
2 3
3 4
4 5
...

correct output
1

user output


10

Test 47

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
3 1 1
1 2
2 3

correct output
3

user output


3

Test 48

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
3 3 3
1 2
2 3

correct output
3

user output


3

Test 49

Group: 1, 2, 4

Verdict:

input
3 2 3
1 2
2 3

correct output
2

user output


4

Test 50

Group: 1, 4

Verdict:

input
7 2 5
2 7
5 7
2 1
5 3
...

correct output
16

user output


24

Test 51

Group: 2, 4

Verdict:

input
200000 1 200000
1 2
2 3
3 4
4 5
...

correct output
1

user output


200000

Test 52

Group: 2, 3, 4

Verdict: ACCEPTED

input
200000 1 1
1 2
2 3
3 4
4 5
...

correct output
200000

user output


200000

Test 53

Group: 2, 3, 4

Verdict: ACCEPTED

input
200000 200000 200000
1 2
2 3
3 4
4 5
...

correct output
200000

user output


200000

Test 54

Group: 2, 3, 4

Verdict: ACCEPTED

input
200000 100000 100000
1 2
2 3
3 4
4 5
...

correct output
99930

user output


99930

Test 55

Group: 2, 4

Verdict:

input
200000 37563 118902
1 2
2 3
3 4
4 5
...

correct output
46321716

user output


101658552

Test 56

Group: 2, 4

Verdict:

input
200000 50775 167353
1 2
2 3
3 4
4 5
...

correct output
657702193

user output


576950101

Test 57

Group: 2, 4

Verdict:

input
200000 146383 37930
1 2
2 3
3 4
4 5
...

correct output
33730726

user output


848763645

Test 58

Group: 2, 4

Verdict:

input
200000 139297 64408
1 2
2 3
3 4
4 5
...

correct output
909823211

user output


455885032

Test 59

Group: 2, 4

Verdict:

input
200000 96291 60612
1 2
2 3
3 4
4 5
...

correct output
286070478

user output


986339547

Test 60

Group: 2, 4

Verdict:

input
199999 132295 169486
1 2
2 3
3 4
4 5
...

correct output
36849602

user output


957032919

Test 61

Group: 2, 4

Verdict:

input
199999 40570 132081
1 2
2 3
3 4
4 5
...

correct output
755473816

user output


468075058

Test 62

Group: 2, 4

Verdict:

input
200000 66666 133332
1 2
2 3
3 4
4 5
...

correct output
444555526

user output


888911054

Test 63

Group: 4

Verdict:

input
200000 74284 172335
1 2
2 3
2 4
4 5
...

correct output
813676449

user output


876537324

Test 64

Group: 4

Verdict:

input
200000 69598 27760
1 2
2 3
3 4
2 5
...

correct output
646690172

user output


516499545

Test 65

Group: 4

Verdict:

input
200000 49557 15601
1 2
2 3
1 4
3 5
...

correct output
566402541

user output


638650633

Test 66

Group: 4

Verdict:

input
200000 154301 42324
1 2
2 3
1 4
4 5
...

correct output
626928627

user output


273315966

Test 67

Group: 4

Verdict:

input
200000 73912 80615
1 2
1 3
2 4
4 5
...

correct output
173675070

user output


431169599

Test 68

Group: 4

Verdict:

input
200000 49444 123149
1 2
2 3
1 4
4 5
...

correct output
293033335

user output


737101321

Test 69

Group: 4

Verdict:

input
200000 68176 124500
1 2
1 3
3 4
3 5
...

correct output
18856604

user output


522512571

Test 70

Group: 4

Verdict:

input
200000 184565 72280
1 2
1 3
2 4
4 5
...

correct output
219119175

user output


685103606

Test 71

Group: 4

Verdict:

input
200000 94918 182877
1 2
1 3
1 4
1 5
...

correct output
752671766

user output


453986637

Test 72

Group: 4

Verdict:

input
200000 187918 126305
1 2
1 3
3 4
1 5
...

correct output
29685111

user output


995252377

Test 73

Group: 3, 4

Verdict: ACCEPTED

input
200000 97734 97734
1 2
2 3
2 4
3 5
...

correct output
328993565

user output


328993565

Test 74

Group: 3, 4

Verdict: ACCEPTED

input
200000 148516 148516
1 2
2 3
1 4
1 5
...

correct output
127541604

user output


127541604

Test 75

Group: 3, 4

Verdict: ACCEPTED

input
200000 190703 190703
1 2
1 3
3 4
2 5
...

correct output
416752559

user output


416752559

Test 76

Group: 3, 4

Verdict: ACCEPTED

input
200000 37698 37698
1 2
2 3
1 4
2 5
...

correct output
416871404

user output


416871404

Test 77

Group: 3, 4

Verdict: ACCEPTED

input
200000 116531 116531
1 2
1 3
2 4
1 5
...

correct output
748204701

user output


748204701

Test 78

Group: 3, 4

Verdict: ACCEPTED

input
200000 27284 27284
1 2
2 3
2 4
4 5
...

correct output
76035204

user output


76035204

Test 79

Group: 3, 4

Verdict: ACCEPTED

input
200000 122685 122685
1 2
1 3
2 4
4 5
...

correct output
337610563

user output


337610563

Test 80

Group: 3, 4

Verdict: ACCEPTED

input
200000 107933 107933
1 2
2 3
2 4
4 5
...

correct output
208311114

user output


208311114

Test 81

Group: 3, 4

Verdict: ACCEPTED

input
200000 138885 138885
1 2
2 3
2 4
3 5
...

correct output
256430889

user output


256430889

Test 82

Group: 3, 4

Verdict: ACCEPTED

input
200000 58880 58880
1 2
2 3
2 4
4 5
...

correct output
768053967

user output


768053967

Test 83

Group: 2, 4

Verdict:

input
200000 75000 90943
168194 176825
176825 120246
120246 59194
59194 193803
...

correct output
391201968

user output


910924395

Test 84

Group: 2, 4

Verdict:

input
200000 143557 105030
114244 129713
129713 100457
100457 70708
70708 178413
...

correct output
21500831

user output


667019187

Test 85

Group: 1, 2, 4

Verdict:

input
10 7 6
4 2
2 7
7 10
10 6
...

correct output
18

user output


24

Test 86

Group: 1, 2, 4

Verdict:

input
10 1 8
1 6
6 10
10 3
3 7
...

correct output
1

user output


10