CSES - Datatähti 2021 loppu - Results
Submission details
Task:Koodarit
Sender:CursedTomb
Submission time:2021-01-23 19:59:38 +0200
Language:C++ (C++17)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2, 3details
#20.01 s1, 2, 3details
#30.01 s1, 2, 3details
#4ACCEPTED0.01 s1, 2, 3details
#5ACCEPTED0.01 s1, 2, 3details
#6ACCEPTED0.01 s1, 2, 3details
#70.01 s1, 2, 3details
#8ACCEPTED0.01 s1, 2, 3details
#90.01 s1, 2, 3details
#100.01 s1, 2, 3details
#11ACCEPTED0.01 s1, 2, 3details
#120.01 s1, 3details
#130.01 s1, 3details
#140.01 s1, 3details
#150.01 s1, 3details
#160.01 s1, 3details
#17ACCEPTED0.05 s2, 3details
#18ACCEPTED0.13 s2, 3details
#19ACCEPTED0.12 s2, 3details
#200.13 s2, 3details
#210.13 s2, 3details
#220.13 s2, 3details
#230.13 s2, 3details
#240.12 s3details
#250.12 s3details
#260.12 s3details
#270.12 s3details
#280.12 s3details
#290.12 s3details
#300.12 s3details
#310.12 s3details

Code

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

vector<int> v;
vector<int> a;
vector<bool> b;
int main()
{
    int n, k;
    cin >> n >> k;
    v.resize(n);
    b.resize(n);
    for(int i =0;i<n;i++) cin >> v[i];
    sort(v.begin(),v.end());

    int r =0;
    if(k==n/2)
    {
        for(int i = 0;i<n-1;i+=2)
        {
            r+=v[i]+v[i+1];
        }
        cout << r;
        return 0;
    }



    for(int i = 1;i<n;i+=2)
    {
        if(v[i]-v[i-1]<=v[i+1]-v[i] && !b[i-1])
        {
            a.push_back(v[i]-v[i-1]);
            b[i]=true;
            b[i-1]=true;
            
        }
        else if(v[i]-v[i-1]<v[i+1]-v[i] && b[i-1])
        {
            if(v[i]-v[i-1]<a[a.size()-1])
            {
                a[a.size()-1]=v[i]-v[i-1];
                a.push_back(v[i-2]-v[i-3]);
                b[i]=true;
                b[i-1]=true;
                b[i-2]=b[i-3]=true;
            }
            else
            {
                if(i+1!= n)
                {
                    a.push_back(v[i+1]-v[i]);
                    b[i+1]=true;
                    b[i]=true;
                }
                
                int tb=i-1;
                while(b[tb])tb--;
                a.push_back(v[i]-v[tb]);
                b[i]=true;
                b[i-1]=true;
            }
        }
        else
        {
            if(i+1!=n)
            {a.push_back(v[i+1]-v[i]);
            b[i+1]=true;
            b[i]=true;}
            else
            {
                int tb=n-2;
                while(b[tb]) tb--;
                a.push_back(v[i]-v[tb]);
            }
        }
    }

    sort(a.begin(),a.end());
    long long ret = 0;
    for(int i =0;i<k;i++)
    {
        ret+=a[i];
    }
    cout << ret;
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
8 3
3 1 2 7 9 3 4 7

correct output
1

user output
1

Test 2

Group: 1, 2, 3

Verdict:

input
2 1
2 13

correct output
11

user output
15

Test 3

Group: 1, 2, 3

Verdict:

input
20 10
16 20 6 15 19 12 11 17 20 6 15...

correct output
6

user output
264

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
14 5
11 3 8 3 14 8 10 13 11 10 17 1...

correct output
0

user output
0

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
15 1
8 5 1 8 18 15 6 20 14 9 10 9 1...

correct output
0

user output
0

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
10 3
10 19 16 15 12 5 14 8 3 15

correct output
4

user output
4

Test 7

Group: 1, 2, 3

Verdict:

input
202 90
177 187 183 647 616 580 499 78...

correct output
213

user output
179

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

input
2000 512
141 583 135 833 900 308 248 58...

correct output
0

user output
0

Test 9

Group: 1, 2, 3

Verdict:

input
2000 972
685 4 289 865 93 159 48 866 56...

correct output
276

user output
189

Test 10

Group: 1, 2, 3

Verdict:

input
2000 1000
698 153 298 118 631 341 238 7 ...

correct output
517

user output
1005817

Test 11

Group: 1, 2, 3

Verdict: ACCEPTED

input
2000 1
983 144 449 584 839 166 77 885...

correct output
0

user output
0

Test 12

Group: 1, 3

Verdict:

input
1464 320
846762124 954854396 12767390 7...

correct output
35809369

user output
34469660

Test 13

Group: 1, 3

Verdict:

input
2000 231
801945178 924940258 369188694 ...

correct output
7831421

user output
7808971

Test 14

Group: 1, 3

Verdict:

input
2000 461
464790475 932031556 838378103 ...

correct output
37272564

user output
36428457

Test 15

Group: 1, 3

Verdict:

input
2000 100
484046702 267135814 995006323 ...

correct output
1268400

user output
1257134

Test 16

Group: 1, 3

Verdict:

input
2000 996
98352148 438929491 242618159 1...

correct output
445965905

user output
283025264

Test 17

Group: 2, 3

Verdict: ACCEPTED

input
65879 19675
896 316 972 476 636 227 716 78...

correct output
0

user output
0

Test 18

Group: 2, 3

Verdict: ACCEPTED

input
200000 53820
995 720 135 767 943 742 191 26...

correct output
0

user output
0

Test 19

Group: 2, 3

Verdict: ACCEPTED

input
200000 32297
527 947 84 851 908 833 339 112...

correct output
0

user output
0

Test 20

Group: 2, 3

Verdict:

input
200000 99982
561 174 242 275 460 109 664 68...

correct output
322

user output
456

Test 21

Group: 2, 3

Verdict:

input
200000 99955
911 33 314 861 298 117 972 982...

correct output
245

user output
462

Test 22

Group: 2, 3

Verdict:

input
200000 99972
783 1000 673 611 87 452 702 92...

correct output
290

user output
497

Test 23

Group: 2, 3

Verdict:

input
200000 99961
795 136 128 643 60 422 371 839...

correct output
252

user output
470

Test 24

Group: 3

Verdict:

input
195426 76599
442872072 619088799 118541378 ...

correct output
143376538

user output
131591051

Test 25

Group: 3

Verdict:

input
200000 1661
894106972 620084612 931442312 ...

correct output
33089

user output
33074

Test 26

Group: 3

Verdict:

input
200000 86032
211444153 846442677 297198384 ...

correct output
196001810

user output
172725282

Test 27

Group: 3

Verdict:

input
200000 28275
28280312 349705372 96535649 84...

correct output
11627219

user output
11475984

Test 28

Group: 3

Verdict:

input
200000 81473
178022892 112774306 250584651 ...

correct output
162430841

user output
146829034

Test 29

Group: 3

Verdict:

input
200000 99987
297598052 494409138 182268523 ...

correct output
489497036

user output
285015311

Test 30

Group: 3

Verdict:

input
200000 99971
316462272 843156468 434342923 ...

correct output
483167476

user output
286791985

Test 31

Group: 3

Verdict:

input
200000 99964
811543559 465033274 620180191 ...

correct output
481497328

user output
286263886