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BOI 2016, day 1

Start:2016-05-12 09:00:00
End:2016-05-12 14:00:00
 

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CSES - BOI 2016, day 1 - Results
History
2016-05-12 09:49:49100
Task:Bosses
Sender:kverti98
Submission time:2016-05-12 09:49:49
Language:C++
Status:READY
Score:100

Feedback

groupverdictscore
#1ACCEPTED22
#2ACCEPTED45
#3ACCEPTED33

Test results

testverdicttime (s)group
#1ACCEPTED0.06 / 1.501details
#2ACCEPTED0.05 / 1.501details
#3ACCEPTED0.06 / 1.501details
#4ACCEPTED0.04 / 1.501details
#5ACCEPTED0.06 / 1.501details
#6ACCEPTED0.05 / 1.501details
#7ACCEPTED0.05 / 1.502details
#8ACCEPTED0.05 / 1.502details
#9ACCEPTED0.05 / 1.502details
#10ACCEPTED0.06 / 1.502details
#11ACCEPTED0.05 / 1.502details
#12ACCEPTED0.05 / 1.503details
#13ACCEPTED0.05 / 1.503details
#14ACCEPTED0.21 / 1.503details
#15ACCEPTED0.08 / 1.503details
#16ACCEPTED0.62 / 1.503details
#17ACCEPTED0.84 / 1.503details
#18ACCEPTED0.84 / 1.503details

Compiler report

input/code.cpp: In function 'long long int ukoreni(int)':
input/code.cpp:27:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<v[w].size();i++)
                           ^
input/code.cpp: In function 'int main()':
input/code.cpp:50:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i",&n);
                ^
input/code.cpp:54:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i",&k);
                 ^
input/code.cpp:58:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%i",&r);
                  ^

Code

#include <bits/stdc++.h>

using namespace std;
int static const N = 5010;

int n , otac[N] , red[N] , br ,vr[N];
vector<int> v[N];
bool e[N][N] , used[N];

long long ukoreni(int t)
{
	for(int i=0;i<=n;i++)
	{
		otac[i] = -1;
		used[i] = false;
		vr[i] = 0;
	}
	queue<int> q;
	br = 0;
	used[t] = 1;
	q.push(t);
	while(!q.empty())
	{
		int w = q.front();
		red[br++] = w;
		q.pop();
		for(int i=0;i<v[w].size();i++)
		{
			if(!used[v[w][i]])
			{
				used[v[w][i]] = true;
				otac[v[w][i]] = w;
				q.push(v[w][i]);
			}
		}
	}
	for(int i=1;i<=n;i++)
		if(i != t && otac[i] == -1)
			return -1;
	long long uk = 0;
	for(int i=br-1;i>=0;i--)
	{
		uk += ++vr[red[i]];
		vr[otac[red[i]]] += vr[red[i]];
	}
	return uk;
}

int main() {
	scanf("%i",&n);
	for(int i=1;i<=n;i++)
	{
		int k;
		scanf("%i",&k);
		for(int j=0;j<k;j++)
		{
			int r;
			scanf("%i",&r);
			if(!e[i][r])
			{
				v[r].push_back(i);
				e[i][r] = 1;
			}
		}
	}
	long long minn = -1;
	for(int i=1;i<=n;i++)
	{
		long long q = ukoreni(i);
		if(q != -1)
			if(minn == -1 || minn > q)
				minn = q;
	}
	cout<<minn<<endl;
	
	return 0;
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
4
1 4
3 1 3 4
2 1 2
1 3
view   save

correct output
8

view   save

user output
8

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Test 2

Group: 1

Verdict: ACCEPTED

input
6
2 6 5
3 4 6 3
2 4 1
4 5 3 1 6
...
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correct output
12

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user output
12

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Test 3

Group: 1

Verdict: ACCEPTED

input
9
2 6 3
2 8 4
0
4 8 3 6 9
...
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correct output
22

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user output
22

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Test 4

Group: 1

Verdict: ACCEPTED

input
10
3 3 2 8
3 6 7 3
4 6 10 7 9
1 10
...
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correct output
24

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user output
24

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Test 5

Group: 1

Verdict: ACCEPTED

input
10
3 4 8 10
1 10
1 5
3 6 8 5
...
view   save

correct output
23

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user output
23

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Test 6

Group: 1

Verdict: ACCEPTED

input
10
2 2 6
2 3 5
2 4 1
2 6 7
...
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correct output
26

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user output
26

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Test 7

Group: 2

Verdict: ACCEPTED

input
100
2 78 92
1 15
1 57
1 45
...
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correct output
527

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user output
527

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Test 8

Group: 2

Verdict: ACCEPTED

input
50
6 16 31 50 6 4 8
7 7 16 27 22 15 30 14
5 20 22 42 33 37
3 18 45 9
...
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correct output
156

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user output
156

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Test 9

Group: 2

Verdict: ACCEPTED

input
30
5 12 26 25 18 24
8 6 13 5 7 10 22 20 29
6 16 14 9 27 5 20
3 19 17 11
...
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correct output
77

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user output
77

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Test 10

Group: 2

Verdict: ACCEPTED

input
100
2 2 77
3 99 94 85
2 47 29
2 33 74
...
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correct output
428

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user output
428

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Test 11

Group: 2

Verdict: ACCEPTED

input
100
3 50 11 85
2 84 69
2 41 39
2 43 82
...
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correct output
617

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user output
617

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Test 12

Group: 3

Verdict: ACCEPTED

input
200
46 154 36 47 187 86 48 66 124 ...
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correct output
531

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user output
531

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Test 13

Group: 3

Verdict: ACCEPTED

input
150
60 32 101 42 139 95 36 81 83 1...
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correct output
370

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user output
370

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Test 14

Group: 3

Verdict: ACCEPTED

input
5000
1 3355
1 2176
1 3754
1 950
...
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correct output
6256017

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user output
6256017

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Test 15

Group: 3

Verdict: ACCEPTED

input
5000
1 848
1 418
1 3390
1 2840
...
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correct output
45193

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user output
45193

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Test 16

Group: 3

Verdict: ACCEPTED

input
5000
2 4629 753
1 345
3 3573 1802 449
1 3051
...
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correct output
27449

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user output
27449

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Test 17

Group: 3

Verdict: ACCEPTED

input
5000
2 2282 1819
2 2987 3194
2 3472 4256
2 3226 3684
...
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correct output
39850

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user output
39850

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Test 18

Group: 3

Verdict: ACCEPTED

input
5000
2 1912 3423
2 419 4226
2 1627 4693
2 4760 1391
...
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correct output
40097

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user output
40097

view   save