CSES - Aalto Competitive Programming 2024 - wk2 - Mon - Results
Submission details
Task:Establish equality
Sender:ZDHKLV
Submission time:2024-09-09 17:45:46 +0300
Language:C++11
Status:READY
Result:
Test results
testverdicttime
#1ACCEPTED0.00 sdetails
#20.00 sdetails
#3ACCEPTED0.00 sdetails
#40.00 sdetails
#5ACCEPTED0.00 sdetails
#60.00 sdetails
#7ACCEPTED0.00 sdetails
#80.00 sdetails
#90.00 sdetails
#100.00 sdetails
#110.00 sdetails
#120.00 sdetails
#130.00 sdetails
#140.00 sdetails
#150.00 sdetails
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#190.00 sdetails
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#220.00 sdetails
#230.00 sdetails
#240.00 sdetails
#250.00 sdetails
#260.00 sdetails
#270.00 sdetails
#280.00 sdetails
#290.00 sdetails
#300.00 sdetails
#310.01 sdetails
#320.01 sdetails
#330.01 sdetails
#340.01 sdetails
#350.01 sdetails
#360.02 sdetails
#370.01 sdetails
#380.01 sdetails
#390.01 sdetails
#400.01 sdetails
#410.14 sdetails
#420.65 sdetails
#430.96 sdetails
#44--details
#45--details
#46--details
#47--details
#48--details
#49--details
#50--details
#51--details
#52--details
#53--details
#54--details
#55--details

Code

#include <bits/stdc++.h>

using namespace std;

int n;
vector<int> b;

int solve() {

    int mx = 0;

    for (int i = 0; i < n/2; i++) {

        int R = b[n-1-i];
        int L = b[i];
        
        int x = (R - L) / 3;
        int y = 0; //(R - L) - 3*x;

        b[i] += x;
        b[n-1-i] -= 2*x+y;

        mx = max(mx, x);

    }

    sort(b.begin(), b.end());

    if (mx > 0)
        return solve();
    
    unordered_multiset<int> t;

    for (int i = 0; i < n; i++)
        t.insert(b[i]);
    
    int c = -1;
    int max_c = 0;

    auto itr = t.begin();

    while (itr != t.end()) {
        int v = *itr;
        int ct = t.count(v);
        if (ct > max_c) {
            max_c = ct;
            c = v;
        }
        itr++;
    }

    return c;

}

int main() {

    cin >> n;

    for (int i = 0; i < n; i++) {
        int bi;
        cin >> bi;
        b.push_back(bi);
    }

    sort(b.begin(), b.end());

    cout << solve();

    return 0;

}

/*
6
2 0 9 9 2 4
*/

Test details

Test 1

Verdict: ACCEPTED

input
1

correct output
4

user output
4

Test 2

Verdict:

input
2
4 2 

correct output
2

user output
4

Test 3

Verdict: ACCEPTED

input
2
6 0 

correct output
2

user output
2

Test 4

Verdict:

input
3
10 9 6 

correct output
7

user output
9

Test 5

Verdict: ACCEPTED

input
6
2 0 9 9 2 4 

correct output
3

user output
3

Test 6

Verdict:

input
10
4 10 7 10 0 1 3 10 1 2 

correct output
3

user output
4

Test 7

Verdict: ACCEPTED

input
10
4 2 0 10 6 10 4 5 4 3 

correct output
4

user output
4

Test 8

Verdict:

input
10
6 0 7 9 3 1 5 6 9 4 

correct output
3

user output
4

Test 9

Verdict:

input
10
10 9 6 1 10 9 7 6 7 6 

correct output
6

user output
7

Test 10

Verdict:

input
10
2 0 9 9 2 4 10 10 5 0 

correct output
3

user output
4

Test 11

Verdict:

input
10
1 0 0 7 5 2 7 10 4 1 

correct output
2

user output
3

Test 12

Verdict:

input
10
1 4 8 9 2 0 5 7 0 3 

correct output
2

user output
3

Test 13

Verdict:

input
10
8 6 2 9 9 9 10 1 10 8 

correct output
6

user output
7

Test 14

Verdict:

input
10
5 10 8 7 9 4 0 1 3 2 

correct output
3

user output
4

Test 15

Verdict:

input
10
9 8 1 6 0 1 3 9 3 10 

correct output
3

user output
4

Test 16

Verdict:

input
100
417 998 721 933 0 128 302 1000...

correct output
402

user output
391

Test 17

Verdict:

input
100
436 185 25 932 550 948 435 485...

correct output
402

user output
395

Test 18

Verdict:

input
100
551 70 708 840 291 121 511 569...

correct output
391

user output
379

Test 19

Verdict:

input
100
967 901 547 172 973 856 715 60...

correct output
395

user output
385

Test 20

Verdict:

input
100
222 55 871 832 206 364 919 980...

correct output
418

user output
404

Test 21

Verdict:

input
100
180 68 19 665 463 194 725 927 ...

correct output
401

user output
387

Test 22

Verdict:

input
100
154 446 740 874 263 86 534 724...

correct output
409

user output
396

Test 23

Verdict:

input
100
778 607 237 860 825 893 966 17...

correct output
419

user output
404

Test 24

Verdict:

input
100
514 922 773 659 871 366 8 149 ...

correct output
410

user output
398

Test 25

Verdict:

input
100
849 814 179 591 54 111 361 819...

correct output
381

user output
370

Test 26

Verdict:

input
100
48 800 289 680 721 36 21 952 2...

correct output
446

user output
426

Test 27

Verdict:

input
100
208 702 482 731 420 638 860 78...

correct output
431

user output
410

Test 28

Verdict:

input
100
517 669 947 185 766 782 282 57...

correct output
417

user output
399

Test 29

Verdict:

input
100
960 294 700 52 1000 317 220 98...

correct output
483

user output
464

Test 30

Verdict:

input
100
870 696 582 433 279 98 186 181...

correct output
433

user output
419

Test 31

Verdict:

input
1000
549 593 715 845 603 858 545 84...

correct output
417

user output
403

Test 32

Verdict:

input
1000
417 998 721 933 0 128 302 1000...

correct output
409

user output
396

Test 33

Verdict:

input
1000
436 185 25 932 550 948 435 485...

correct output
409

user output
395

Test 34

Verdict:

input
1000
551 70 708 840 291 121 511 569...

correct output
416

user output
402

Test 35

Verdict:

input
1000
967 901 547 172 973 856 715 60...

correct output
420

user output
406

Test 36

Verdict:

input
2000
238363352 59249203 934941691 8...

correct output
408637955

user output
394691092

Test 37

Verdict:

input
2000
958701282 356460600 224848373 ...

correct output
419252506

user output
404638609

Test 38

Verdict:

input
2000
81935403 244103473 837431430 3...

correct output
416082617

user output
401726931

Test 39

Verdict:

input
2000
937837680 11934037 257096282 9...

correct output
417515719

user output
401269149

Test 40

Verdict:

input
2000
11139167 391337047 538883743 5...

correct output
409258945

user output
394906395

Test 41

Verdict:

input
10000
589284011 636562059 767928733 ...

correct output
413957321

user output
399813856

Test 42

Verdict:

input
20000
447773961 773442531 122815 137...

correct output
414852078

user output
400791543

Test 43

Verdict:

input
30000
468145962 198730371 27838075 5...

correct output
410179075

user output
396582275

Test 44

Verdict:

input
40000
591414746 75940262 760367934 9...

correct output
414505355

user output
(empty)

Test 45

Verdict:

input
50000
967034923 587586157 185430193 ...

correct output
412022071

user output
(empty)

Test 46

Verdict:

input
60000
238363352 59249203 934941691 8...

correct output
414871380

user output
(empty)

Test 47

Verdict:

input
70000
958701282 356460600 224848373 ...

correct output
413955399

user output
(empty)

Test 48

Verdict:

input
80000
81935403 244103473 837431430 3...

correct output
414719178

user output
(empty)

Test 49

Verdict:

input
90000
937837680 11934037 257096282 9...

correct output
412407588

user output
(empty)

Test 50

Verdict:

input
100000
11139167 391337047 538883743 5...

correct output
413339299

user output
(empty)

Test 51

Verdict:

input
200000
589284011 636562059 767928733 ...

correct output
414309243

user output
(empty)

Test 52

Verdict:

input
200000
447773961 773442531 122815 137...

correct output
413259631

user output
(empty)

Test 53

Verdict:

input
200000
468145962 198730371 27838075 5...

correct output
413293056

user output
(empty)

Test 54

Verdict:

input
200000
591414746 75940262 760367934 9...

correct output
414827553

user output
(empty)

Test 55

Verdict:

input
200000
967034923 587586157 185430193 ...

correct output
412998578

user output
(empty)