CSES - Datatähti Open 2021 - Results
Submission details
Task:Programmers
Sender:oleh1421
Submission time:2021-01-30 16:37:12 +0200
Language:C++11
Status:READY
Result:55
Feedback
groupverdictscore
#1ACCEPTED34
#2ACCEPTED21
#30
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2, 3details
#2ACCEPTED0.01 s1, 2, 3details
#3ACCEPTED0.01 s1, 2, 3details
#4ACCEPTED0.01 s1, 2, 3details
#5ACCEPTED0.01 s1, 2, 3details
#6ACCEPTED0.01 s1, 2, 3details
#7ACCEPTED0.01 s1, 2, 3details
#8ACCEPTED0.01 s1, 2, 3details
#9ACCEPTED0.01 s1, 2, 3details
#10ACCEPTED0.01 s1, 2, 3details
#11ACCEPTED0.01 s1, 2, 3details
#12ACCEPTED0.01 s1, 3details
#13ACCEPTED0.01 s1, 3details
#14ACCEPTED0.01 s1, 3details
#15ACCEPTED0.01 s1, 3details
#16ACCEPTED0.01 s1, 3details
#17ACCEPTED0.02 s2, 3details
#18ACCEPTED0.04 s2, 3details
#19ACCEPTED0.04 s2, 3details
#20ACCEPTED0.04 s2, 3details
#21ACCEPTED0.04 s2, 3details
#22ACCEPTED0.04 s2, 3details
#23ACCEPTED0.04 s2, 3details
#24--3details
#25--3details
#26--3details
#27--3details
#28--3details
#29--3details
#30--3details
#31--3details

Code

//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC target("avx")
#include <bits/stdc++.h>
typedef long long ll;
#define endl '\n'
using namespace std;
const int N=2019;
const ll inf=1e18+1ll;
ll dp[N][N];
int cnt[N];
int a[N];
void solve(){
    int n,k;cin>>n>>k;
    map<int,int>mp;
    for (int i=1;i<=n;i++){
        int x;cin>>x;
        mp[x]++;
    }
    n=0;

    for (auto cur:mp){
        k-=cur.second/2;
        if (cur.second%2) a[++n]=cur.first;
    }
    sort(a+1,a+n+1);
    if (k<=0){
        cout<<0<<endl;
        return;
    }
    for (int i=1;i<=n;i++) dp[0][i]=0;
    for (int i=1;i<=k;i++){
        dp[i][i*2]=dp[i-1][i*2-2]+a[i*2]-a[i*2-1];
        for (int j=i*2+1;j<=n;j++){
            dp[i][j]=min(dp[i][j-1],dp[i-1][j-2]+a[j]-a[j-1]);
        }
    }
    cout<<dp[k][n]<<endl;


//    double L=0.0;
//    double R=1000000001.0;
//
//    for (int it=1;it<=100;it++){
//        double mid=(L+R)/2.0;
//        dp[0]=dp[1]=0.0;
//        for (int i=2;i<=n;i++){
//            dp[i]=dp[i-1];
//            cnt[i]=cnt[i-1];
//            if (dp[i]>a[i]-a[i-1]-mid+dp[i-2]){
//                dp[i]=a[i]-a[i-1]-mid+dp[i-2];
//                cnt[i]=cnt[i-2]+1;
//            }
//        }
//        //cout<<L<<" "<<mid<<" "<<R<<" "<<cnt[b]<<
//
//        if (cnt[n]>k && it<100) R=mid;
//        else if (cnt[n]<k && it<100) L=mid;
//        else {
//            ll res=dp[n]+(cnt[n]*1.0)*mid;
////            if (cnt[n]!=k) exit(1);
//            cout<<res<<endl;
//            exit(0);
//        }
//    }
//    exit(1);


}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int tt=1;
    while (tt--){
        solve();
    }
    return 0;
}
/*
9 2
3 3 3 3 13 34 43 43 234
*/

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: ACCEPTED

input
2 1
2 13

correct output
11

user output
11

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
6

user output
6

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: ACCEPTED

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

correct output
213

user output
213

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: ACCEPTED

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

correct output
276

user output
276

Test 10

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
517

user output
517

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: ACCEPTED

input
1464 320
846762124 954854396 12767390 7...

correct output
35809369

user output
35809369

Test 13

Group: 1, 3

Verdict: ACCEPTED

input
2000 231
801945178 924940258 369188694 ...

correct output
7831421

user output
7831421

Test 14

Group: 1, 3

Verdict: ACCEPTED

input
2000 461
464790475 932031556 838378103 ...

correct output
37272564

user output
37272564

Test 15

Group: 1, 3

Verdict: ACCEPTED

input
2000 100
484046702 267135814 995006323 ...

correct output
1268400

user output
1268400

Test 16

Group: 1, 3

Verdict: ACCEPTED

input
2000 996
98352148 438929491 242618159 1...

correct output
445965905

user output
445965905

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: ACCEPTED

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

correct output
322

user output
322

Test 21

Group: 2, 3

Verdict: ACCEPTED

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

correct output
245

user output
245

Test 22

Group: 2, 3

Verdict: ACCEPTED

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

correct output
290

user output
290

Test 23

Group: 2, 3

Verdict: ACCEPTED

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

correct output
252

user output
252

Test 24

Group: 3

Verdict:

input
195426 76599
442872072 619088799 118541378 ...

correct output
143376538

user output
(empty)

Test 25

Group: 3

Verdict:

input
200000 1661
894106972 620084612 931442312 ...

correct output
33089

user output
(empty)

Test 26

Group: 3

Verdict:

input
200000 86032
211444153 846442677 297198384 ...

correct output
196001810

user output
(empty)

Test 27

Group: 3

Verdict:

input
200000 28275
28280312 349705372 96535649 84...

correct output
11627219

user output
(empty)

Test 28

Group: 3

Verdict:

input
200000 81473
178022892 112774306 250584651 ...

correct output
162430841

user output
(empty)

Test 29

Group: 3

Verdict:

input
200000 99987
297598052 494409138 182268523 ...

correct output
489497036

user output
(empty)

Test 30

Group: 3

Verdict:

input
200000 99971
316462272 843156468 434342923 ...

correct output
483167476

user output
(empty)

Test 31

Group: 3

Verdict:

input
200000 99964
811543559 465033274 620180191 ...

correct output
481497328

user output
(empty)