CSES - Datatähti 2020 loppu

CSES - Datatähti 2020 loppu - Results

Submission details
Task:	Kierrokset
Sender:	Juho Röyskö
Submission time:	2020-02-09 15:14:23 +0200
Language:	C++ (C++11)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	WRONG ANSWER	0
#2	WRONG ANSWER	0
#3	WRONG ANSWER	0
#4	WRONG ANSWER	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.01 s	1, 2, 4	details
#2	ACCEPTED	0.01 s	1, 4	details
#3	ACCEPTED	0.01 s	1, 4	details
#4	ACCEPTED	0.01 s	1, 4	details
#5	ACCEPTED	0.01 s	2, 4	details
#6	ACCEPTED	0.01 s	4	details
#7	ACCEPTED	0.01 s	4	details
#8	ACCEPTED	0.01 s	4	details
#9	ACCEPTED	0.01 s	2, 4	details
#10	ACCEPTED	0.01 s	4	details
#11	ACCEPTED	0.01 s	4	details
#12	ACCEPTED	0.01 s	4	details
#13	ACCEPTED	0.01 s	2, 4	details
#14	ACCEPTED	0.01 s	4	details
#15	ACCEPTED	0.01 s	4	details
#16	ACCEPTED	0.01 s	4	details
#17	ACCEPTED	0.01 s	2, 4	details
#18	ACCEPTED	0.01 s	4	details
#19	ACCEPTED	0.01 s	4	details
#20	ACCEPTED	0.01 s	4	details
#21	ACCEPTED	0.02 s	2, 4	details
#22	ACCEPTED	0.02 s	4	details
#23	ACCEPTED	0.02 s	4	details
#24	ACCEPTED	0.02 s	4	details
#25	ACCEPTED	0.05 s	2, 4	details
#26	ACCEPTED	0.10 s	4	details
#27	ACCEPTED	0.09 s	4	details
#28	ACCEPTED	0.10 s	4	details
#29	ACCEPTED	0.01 s	1, 2, 3, 4	details
#30	ACCEPTED	0.01 s	1, 2, 3, 4	details
#31	ACCEPTED	0.01 s	1, 2, 3, 4	details
#32	ACCEPTED	0.01 s	1, 2, 4	details
#33	WRONG ANSWER	0.01 s	1, 2, 3, 4	details
#34	ACCEPTED	0.01 s	1, 2, 4	details
#35	ACCEPTED	0.01 s	1, 2, 4	details
#36	ACCEPTED	0.01 s	1, 3, 4	details
#37	ACCEPTED	0.01 s	1, 4	details
#38	ACCEPTED	0.01 s	1, 4	details
#39	ACCEPTED	0.01 s	1, 4	details
#40	ACCEPTED	0.01 s	1, 4	details
#41	ACCEPTED	0.01 s	1, 4	details
#42	ACCEPTED	0.01 s	1, 4	details
#43	ACCEPTED	0.01 s	1, 4	details
#44	ACCEPTED	0.01 s	1, 4	details
#45	ACCEPTED	0.01 s	1, 4	details
#46	ACCEPTED	0.01 s	1, 2, 4	details
#47	ACCEPTED	0.01 s	1, 2, 3, 4	details
#48	ACCEPTED	0.01 s	1, 2, 3, 4	details
#49	ACCEPTED	0.01 s	1, 2, 4	details
#50	ACCEPTED	0.01 s	1, 4	details
#51	ACCEPTED	0.07 s	2, 4	details
#52	ACCEPTED	0.06 s	2, 3, 4	details
#53	ACCEPTED	0.06 s	2, 3, 4	details
#54	WRONG ANSWER	0.06 s	2, 3, 4	details
#55	ACCEPTED	0.07 s	2, 4	details
#56	ACCEPTED	0.07 s	2, 4	details
#57	ACCEPTED	0.07 s	2, 4	details
#58	ACCEPTED	0.07 s	2, 4	details
#59	ACCEPTED	0.07 s	2, 4	details
#60	ACCEPTED	0.07 s	2, 4	details
#61	ACCEPTED	0.07 s	2, 4	details
#62	ACCEPTED	0.07 s	2, 4	details
#63	ACCEPTED	0.11 s	4	details
#64	ACCEPTED	0.11 s	4	details
#65	ACCEPTED	0.12 s	4	details
#66	ACCEPTED	0.11 s	4	details
#67	ACCEPTED	0.10 s	4	details
#68	ACCEPTED	0.10 s	4	details
#69	ACCEPTED	0.10 s	4	details
#70	ACCEPTED	0.10 s	4	details
#71	ACCEPTED	0.12 s	4	details
#72	ACCEPTED	0.12 s	4	details
#73	WRONG ANSWER	0.10 s	3, 4	details
#74	WRONG ANSWER	0.10 s	3, 4	details
#75	ACCEPTED	0.10 s	3, 4	details
#76	ACCEPTED	0.10 s	3, 4	details
#77	ACCEPTED	0.10 s	3, 4	details
#78	ACCEPTED	0.10 s	3, 4	details
#79	ACCEPTED	0.10 s	3, 4	details
#80	ACCEPTED	0.10 s	3, 4	details
#81	ACCEPTED	0.10 s	3, 4	details
#82	ACCEPTED	0.10 s	3, 4	details
#83	ACCEPTED	0.10 s	2, 4	details
#84	ACCEPTED	0.10 s	2, 4	details
#85	ACCEPTED	0.01 s	1, 2, 4	details
#86	ACCEPTED	0.01 s	1, 2, 4	details

Code

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const int M = 1e9 + 7;
vector<int> v[202020];
bool d[202020];

bool search1(int x, int y, int p) {
	if (x == y) return true;
	for (int z : v[x]) {
		if (z == p) continue;

		d[z] = 1;
		if (search1(z, y, x)) return true;
		d[z] = 0;
	}
	return false;
}

ll search2(int x, int p) {
	ll s = 1;
	if (!d[x] && v[x].size() == 1) return 1;
	for (int z : v[x]) {
		if (d[z] || z == p) continue;

		if (v[x].size() == 2) return 1 + search2(z, x);
		else s *= search2(z, x)+1;
		s %= M;
	}
	return s;
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);

	int n, x, y;
	cin >> n >> x >> y;

	for (int i = 1; i < n; ++i) {
		int a, b;
		cin >> a >> b;

		v[a].push_back(b);
		v[b].push_back(a);
	}

	d[x] = true;
	d[y] = true;
	search1(x, y, 0);

	ll s = 1;
	for (int i = 1; i <= n; ++i) {
		if (d[i]) {
			s *= search2(i, 0);
			s %= M;
		}
	}
	cout << s << '\n';
}

Test details

Test 1

Group: 1, 2, 4

Verdict: ACCEPTED

input
`10 5 6 1 2 2 3 3 4 4 5 ...` view save

correct output
`25` view save

user output
`25` view save

Test 2

Group: 1, 4

Verdict: ACCEPTED

input
`10 8 1 10 7 7 3 8 7 10 9 ...` view save

correct output
`36` view save

user output
`36` view save

Test 3

Group: 1, 4

Verdict: ACCEPTED

input
`10 10 5 1 6 2 6 2 4 7 2 ...` view save

correct output
`36` view save

user output
`36` view save

Test 4

Group: 1, 4

Verdict: ACCEPTED

input
`10 7 9 9 6 9 1 1 8 9 2 ...` view save

correct output
`48` view save

user output
`48` view save

Test 5

Group: 2, 4

Verdict: ACCEPTED

input
`50 46 14 1 2 2 3 3 4 4 5 ...` view save

correct output
`70` view save

user output
`70` view save

Test 6

Group: 4

Verdict: ACCEPTED

input
`50 49 14 27 13 27 50 5 27 30 5 ...` view save

correct output
`535291010` view save

user output
`535291010` view save

Test 7

Group: 4

Verdict: ACCEPTED

input
`50 46 18 24 45 3 24 24 25 32 45 ...` view save

correct output
`250065865` view save

user output
`250065865` view save

Test 8

Group: 4

Verdict: ACCEPTED

input
`50 39 9 4 50 5 50 4 28 17 4 ...` view save

correct output
`145500013` view save

user output
`145500013` view save

Test 9

Group: 2, 4

Verdict: ACCEPTED

input
`250 166 226 1 2 2 3 3 4 4 5 ...` view save

correct output
`4150` view save

user output
`4150` view save

Test 10

Group: 4

Verdict: ACCEPTED

input
`250 104 224 118 137 189 118 127 189 132 189 ...` view save

correct output
`230001327` view save

user output
`230001327` view save

Test 11

Group: 4

Verdict: ACCEPTED

input
`250 20 113 100 108 220 108 220 228 62 108 ...` view save

correct output
`734434924` view save

user output
`734434924` view save

Test 12

Group: 4

Verdict: ACCEPTED

input
`250 116 21 221 16 221 223 22 16 16 79 ...` view save

correct output
`273467702` view save

user output
`273467702` view save

Test 13

Group: 2, 4

Verdict: ACCEPTED

input
`1250 556 801 1 2 2 3 3 4 4 5 ...` view save

correct output
`250200` view save

user output
`250200` view save

Test 14

Group: 4

Verdict: ACCEPTED

input
`1250 1115 100 952 651 952 289 166 952 166 871 ...` view save

correct output
`600544658` view save

user output
`600544658` view save

Test 15

Group: 4

Verdict: ACCEPTED

input
`1250 657 79 13 420 13 346 13 287 1210 420 ...` view save

correct output
`813695503` view save

user output
`813695503` view save

Test 16

Group: 4

Verdict: ACCEPTED

input
`1250 214 271 522 351 140 351 805 351 522 431 ...` view save

correct output
`212897427` view save

user output
`212897427` view save

Test 17

Group: 2, 4

Verdict: ACCEPTED

input
`6250 4685 392 1 2 2 3 3 4 4 5 ...` view save

correct output
`613872` view save

user output
`613872` view save

Test 18

Group: 4

Verdict: ACCEPTED

input
`6250 5270 5866 5282 4610 5282 1160 4610 1967 2502 5282 ...` view save

correct output
`423709118` view save

user output
`423709118` view save

Test 19

Group: 4

Verdict: ACCEPTED

input
`6250 6162 514 4663 2181 6136 2181 6136 3161 3161 2803 ...` view save

correct output
`949879698` view save

user output
`949879698` view save

Test 20

Group: 4

Verdict: ACCEPTED

input
`6250 1522 4950 1937 2721 4518 2721 1937 2231 1937 771 ...` view save

correct output
`152101730` view save

user output
`152101730` view save

Test 21

Group: 2, 4

Verdict: ACCEPTED

input
`31250 28710 19769 1 2 2 3 3 4 4 5 ...` view save

correct output
`50233029` view save

user output
`50233029` view save

Test 22

Group: 4

Verdict: ACCEPTED

input
`31250 27848 22747 16893 8747 18910 16893 30376 16893 23945 18910 ...` view save

correct output
`522494382` view save

user output
`522494382` view save

Test 23

Group: 4

Verdict: ACCEPTED

input
`31250 6703 20415 23779 14085 23779 9341 14085 28511 14085 23151 ...` view save

correct output
`615059214` view save

user output
`615059214` view save

Test 24

Group: 4

Verdict: ACCEPTED

input
`31250 26948 21755 344 12546 12546 11641 11641 1883 9152 12546 ...` view save

correct output
`614062321` view save

user output
`614062321` view save

Test 25

Group: 2, 4

Verdict: ACCEPTED

input
`156250 71359 63141 1 2 2 3 3 4 4 5 ...` view save

correct output
`360165737` view save

user output
`360165737` view save

Test 26

Group: 4

Verdict: ACCEPTED

input
`156250 132945 97315 139434 74332 121914 74332 31473 121914 20412 139434 ...` view save

correct output
`901028288` view save

user output
`901028288` view save

Test 27

Group: 4

Verdict: ACCEPTED

input
`156250 85489 5733 140340 76749 140340 98734 76749 30645 76749 72109 ...` view save

correct output
`38533849` view save

user output
`38533849` view save

Test 28

Group: 4

Verdict: ACCEPTED

input
`156250 143710 49348 65050 143666 143666 47977 143666 35254 47977 99013 ...` view save

correct output
`615178214` view save

user output
`615178214` view save

Test 29

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
`1 1 1` view save

correct output
`1` view save

user output
`1` view save

Test 30

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
`2 1 1 1 2` view save

correct output
`2` view save

user output
`2` view save

Test 31

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
`2 2 2 1 2` view save

correct output
`2` view save

user output
`2` view save

Test 32

Group: 1, 2, 4

Verdict: ACCEPTED

input
`2 1 2 1 2` view save

correct output
`1` view save

user output
`1` view save

Test 33

Group: 1, 2, 3, 4

Verdict: WRONG ANSWER

input
`3 2 2 1 2 2 3` view save

correct output
`4` view save

user output
`2` view save

Test 34

Group: 1, 2, 4

Verdict: ACCEPTED

input
`3 1 2 1 2 2 3` view save

correct output
`2` view save

user output
`2` view save

Test 35

Group: 1, 2, 4

Verdict: ACCEPTED

input
`3 1 3 1 2 2 3` view save

correct output
`1` view save

user output
`1` view save

Test 36

Group: 1, 3, 4

Verdict: ACCEPTED

input
`10 4 4 1 2 1 3 3 4 1 5 ...` view save

correct output
`99` view save

user output
`99` view save

Test 37

Group: 1, 4

Verdict: ACCEPTED

input
`10 7 2 1 2 1 3 1 4 2 5 ...` view save

correct output
`32` view save

user output
`32` view save

Test 38

Group: 1, 4

Verdict: ACCEPTED

input
`10 2 4 1 2 1 3 1 4 2 5 ...` view save

correct output
`72` view save

user output
`72` view save

Test 39

Group: 1, 4

Verdict: ACCEPTED

input
`10 4 8 1 2 2 3 3 4 2 5 ...` view save

correct output
`32` view save

user output
`32` view save

Test 40

Group: 1, 4

Verdict: ACCEPTED

input
`10 3 1 1 2 1 3 1 4 2 5 ...` view save

correct output
`108` view save

user output
`108` view save

Test 41

Group: 1, 4

Verdict: ACCEPTED

input
`10 7 8 1 2 2 3 2 4 3 5 ...` view save

correct output
`15` view save

user output
`15` view save

Test 42

Group: 1, 4

Verdict: ACCEPTED

input
`10 4 10 1 2 1 3 3 4 4 5 ...` view save

correct output
`40` view save

user output
`40` view save

Test 43

Group: 1, 4

Verdict: ACCEPTED

input
`10 3 1 1 2 2 3 2 4 2 5 ...` view save

correct output
`96` view save

user output
`96` view save

Test 44

Group: 1, 4

Verdict: ACCEPTED

input
`10 6 2 1 2 1 3 2 4 3 5 ...` view save

correct output
`40` view save

user output
`40` view save

Test 45

Group: 1, 4

Verdict: ACCEPTED

input
`10 2 1 1 2 1 3 3 4 4 5 ...` view save

correct output
`30` view save

user output
`30` view save

Test 46

Group: 1, 2, 4

Verdict: ACCEPTED

input
`10 1 10 1 2 2 3 3 4 4 5 ...` view save

correct output
`1` view save

user output
`1` view save

Test 47

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
`3 1 1 1 2 2 3` view save

correct output
`3` view save

user output
`3` view save

Test 48

Group: 1, 2, 3, 4

Verdict: ACCEPTED

input
`3 3 3 1 2 2 3` view save

correct output
`3` view save

user output
`3` view save

Test 49

Group: 1, 2, 4

Verdict: ACCEPTED

input
`3 2 3 1 2 2 3` view save

correct output
`2` view save

user output
`2` view save

Test 50

Group: 1, 4

Verdict: ACCEPTED

input
`7 2 5 2 7 5 7 2 1 5 3 ...` view save

correct output
`16` view save

user output
`16` view save

Test 51

Group: 2, 4

Verdict: ACCEPTED

input
`200000 1 200000 1 2 2 3 3 4 4 5 ...` view save

correct output
`1` view save

user output
`1` view save

Test 52

Group: 2, 3, 4

Verdict: ACCEPTED

input
`200000 1 1 1 2 2 3 3 4 4 5 ...` view save

correct output
`200000` view save

user output
`200000` view save

Test 53

Group: 2, 3, 4

Verdict: ACCEPTED

input
`200000 200000 200000 1 2 2 3 3 4 4 5 ...` view save

correct output
`200000` view save

user output
`200000` view save

Test 54

Group: 2, 3, 4

Verdict: WRONG ANSWER

input
`200000 100000 100000 1 2 2 3 3 4 4 5 ...` view save

correct output
`99930` view save

user output
`100000` view save

Test 55

Group: 2, 4

Verdict: ACCEPTED

input
`200000 37563 118902 1 2 2 3 3 4 4 5 ...` view save

correct output
`46321716` view save

user output
`46321716` view save

Test 56

Group: 2, 4

Verdict: ACCEPTED

input
`200000 50775 167353 1 2 2 3 3 4 4 5 ...` view save

correct output
`657702193` view save

user output
`657702193` view save

Test 57

Group: 2, 4

Verdict: ACCEPTED

input
`200000 146383 37930 1 2 2 3 3 4 4 5 ...` view save

correct output
`33730726` view save

user output
`33730726` view save

Test 58

Group: 2, 4

Verdict: ACCEPTED

input
`200000 139297 64408 1 2 2 3 3 4 4 5 ...` view save

correct output
`909823211` view save

user output
`909823211` view save

Test 59

Group: 2, 4

Verdict: ACCEPTED

input
`200000 96291 60612 1 2 2 3 3 4 4 5 ...` view save

correct output
`286070478` view save

user output
`286070478` view save

Test 60

Group: 2, 4

Verdict: ACCEPTED

input
`199999 132295 169486 1 2 2 3 3 4 4 5 ...` view save

correct output
`36849602` view save

user output
`36849602` view save

Test 61

Group: 2, 4

Verdict: ACCEPTED

input
`199999 40570 132081 1 2 2 3 3 4 4 5 ...` view save

correct output
`755473816` view save

user output
`755473816` view save

Test 62

Group: 2, 4

Verdict: ACCEPTED

input
`200000 66666 133332 1 2 2 3 3 4 4 5 ...` view save

correct output
`444555526` view save

user output
`444555526` view save

Test 63

Group: 4

Verdict: ACCEPTED

input
`200000 74284 172335 1 2 2 3 2 4 4 5 ...` view save

correct output
`813676449` view save

user output
`813676449` view save

Test 64

Group: 4

Verdict: ACCEPTED

input
`200000 69598 27760 1 2 2 3 3 4 2 5 ...` view save

correct output
`646690172` view save

user output
`646690172` view save

Test 65

Group: 4

Verdict: ACCEPTED

input
`200000 49557 15601 1 2 2 3 1 4 3 5 ...` view save

correct output
`566402541` view save

user output
`566402541` view save

Test 66

Group: 4

Verdict: ACCEPTED

input
`200000 154301 42324 1 2 2 3 1 4 4 5 ...` view save

correct output
`626928627` view save

user output
`626928627` view save

Test 67

Group: 4

Verdict: ACCEPTED

input
`200000 73912 80615 1 2 1 3 2 4 4 5 ...` view save

correct output
`173675070` view save

user output
`173675070` view save

Test 68

Group: 4

Verdict: ACCEPTED

input
`200000 49444 123149 1 2 2 3 1 4 4 5 ...` view save

correct output
`293033335` view save

user output
`293033335` view save

Test 69

Group: 4

Verdict: ACCEPTED

input
`200000 68176 124500 1 2 1 3 3 4 3 5 ...` view save

correct output
`18856604` view save

user output
`18856604` view save

Test 70

Group: 4

Verdict: ACCEPTED

input
`200000 184565 72280 1 2 1 3 2 4 4 5 ...` view save

correct output
`219119175` view save

user output
`219119175` view save

Test 71

Group: 4

Verdict: ACCEPTED

input
`200000 94918 182877 1 2 1 3 1 4 1 5 ...` view save

correct output
`752671766` view save

user output
`752671766` view save

Test 72

Group: 4

Verdict: ACCEPTED

input
`200000 187918 126305 1 2 1 3 3 4 1 5 ...` view save

correct output
`29685111` view save

user output
`29685111` view save

Test 73

Group: 3, 4

Verdict: WRONG ANSWER

input
`200000 97734 97734 1 2 2 3 2 4 3 5 ...` view save

correct output
`328993565` view save

user output
`664496786` view save

Test 74

Group: 3, 4

Verdict: WRONG ANSWER

input
`200000 148516 148516 1 2 2 3 1 4 1 5 ...` view save

correct output
`127541604` view save

user output
`63770802` view save

Test 75

Group: 3, 4

Verdict: ACCEPTED

input
`200000 190703 190703 1 2 1 3 3 4 2 5 ...` view save

correct output
`416752559` view save

user output
`416752559` view save

Test 76

Group: 3, 4

Verdict: ACCEPTED

input
`200000 37698 37698 1 2 2 3 1 4 2 5 ...` view save

correct output
`416871404` view save

user output
`416871404` view save

Test 77

Group: 3, 4

Verdict: ACCEPTED

input
`200000 116531 116531 1 2 1 3 2 4 1 5 ...` view save

correct output
`748204701` view save

user output
`748204701` view save

Test 78

Group: 3, 4

Verdict: ACCEPTED

input
`200000 27284 27284 1 2 2 3 2 4 4 5 ...` view save

correct output
`76035204` view save

user output
`76035204` view save

Test 79

Group: 3, 4

Verdict: ACCEPTED

input
`200000 122685 122685 1 2 1 3 2 4 4 5 ...` view save

correct output
`337610563` view save

user output
`337610563` view save

Test 80

Group: 3, 4

Verdict: ACCEPTED

input
`200000 107933 107933 1 2 2 3 2 4 4 5 ...` view save

correct output
`208311114` view save

user output
`208311114` view save

Test 81

Group: 3, 4

Verdict: ACCEPTED

input
`200000 138885 138885 1 2 2 3 2 4 3 5 ...` view save

correct output
`256430889` view save

user output
`256430889` view save

Test 82

Group: 3, 4

Verdict: ACCEPTED

input
`200000 58880 58880 1 2 2 3 2 4 4 5 ...` view save

correct output
`768053967` view save

user output
`768053967` view save

Test 83

Group: 2, 4

Verdict: ACCEPTED

input
`200000 75000 90943 168194 176825 176825 120246 120246 59194 59194 193803 ...` view save

correct output
`391201968` view save

user output
`391201968` view save

Test 84

Group: 2, 4

Verdict: ACCEPTED

input
`200000 143557 105030 114244 129713 129713 100457 100457 70708 70708 178413 ...` view save

correct output
`21500831` view save

user output
`21500831` view save

Test 85

Group: 1, 2, 4

Verdict: ACCEPTED

input
`10 7 6 4 2 2 7 7 10 10 6 ...` view save

correct output
`18` view save

user output
`18` view save

Test 86

Group: 1, 2, 4

Verdict: ACCEPTED

input
`10 1 8 1 6 6 10 10 3 3 7 ...` view save

correct output
`1` view save

user output
`1` view save

Datatähti 2020 loppu

Kierrokset

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