CSES - Aalto Competitive Programming 2024 - wk4 - Wed - Results
Submission details
Task:Sorting books
Sender:aalto2024d_001
Submission time:2024-09-25 16:48:51 +0300
Language:C++ (C++11)
Status:READY
Result:ACCEPTED
Test results
testverdicttime
#1ACCEPTED0.00 sdetails
#2ACCEPTED0.00 sdetails
#3ACCEPTED0.00 sdetails
#4ACCEPTED0.00 sdetails
#5ACCEPTED0.00 sdetails
#6ACCEPTED0.00 sdetails
#7ACCEPTED0.00 sdetails
#8ACCEPTED0.00 sdetails
#9ACCEPTED0.00 sdetails
#10ACCEPTED0.00 sdetails
#11ACCEPTED0.00 sdetails
#12ACCEPTED0.00 sdetails
#13ACCEPTED0.00 sdetails
#14ACCEPTED0.00 sdetails
#15ACCEPTED0.00 sdetails
#16ACCEPTED0.00 sdetails
#17ACCEPTED0.00 sdetails
#18ACCEPTED0.00 sdetails
#19ACCEPTED0.00 sdetails
#20ACCEPTED0.00 sdetails
#21ACCEPTED0.00 sdetails
#22ACCEPTED0.00 sdetails
#23ACCEPTED0.00 sdetails
#24ACCEPTED0.00 sdetails
#25ACCEPTED0.00 sdetails
#26ACCEPTED0.00 sdetails
#27ACCEPTED0.00 sdetails
#28ACCEPTED0.00 sdetails
#29ACCEPTED0.00 sdetails
#30ACCEPTED0.00 sdetails
#31ACCEPTED0.00 sdetails
#32ACCEPTED0.00 sdetails
#33ACCEPTED0.00 sdetails
#34ACCEPTED0.00 sdetails
#35ACCEPTED0.00 sdetails
#36ACCEPTED0.00 sdetails
#37ACCEPTED0.00 sdetails
#38ACCEPTED0.00 sdetails
#39ACCEPTED0.00 sdetails
#40ACCEPTED0.00 sdetails
#41ACCEPTED0.00 sdetails
#42ACCEPTED0.00 sdetails
#43ACCEPTED0.00 sdetails
#44ACCEPTED0.00 sdetails
#45ACCEPTED0.00 sdetails
#46ACCEPTED0.00 sdetails
#47ACCEPTED0.00 sdetails
#48ACCEPTED0.00 sdetails
#49ACCEPTED0.00 sdetails
#50ACCEPTED0.00 sdetails
#51ACCEPTED0.00 sdetails
#52ACCEPTED0.00 sdetails
#53ACCEPTED0.00 sdetails
#54ACCEPTED0.00 sdetails
#55ACCEPTED0.00 sdetails
#56ACCEPTED0.00 sdetails
#57ACCEPTED0.00 sdetails
#58ACCEPTED0.00 sdetails
#59ACCEPTED0.00 sdetails
#60ACCEPTED0.00 sdetails
#61ACCEPTED0.12 sdetails
#62ACCEPTED0.17 sdetails
#63ACCEPTED0.12 sdetails
#64ACCEPTED0.12 sdetails
#65ACCEPTED0.12 sdetails
#66ACCEPTED0.12 sdetails
#67ACCEPTED0.12 sdetails
#68ACCEPTED0.12 sdetails
#69ACCEPTED0.12 sdetails
#70ACCEPTED0.12 sdetails
#71ACCEPTED0.06 sdetails

Code


#include <algorithm>
#include <iostream>
#include <queue>
#include <vector>

using namespace std;


long int merge(vector<long int>& arr, vector<long int>& temp, long int left, long int mid, long int right)
{
	long int inv_count = 0;

	long int i = left;
	long int j = mid;
	long int k = left;
	while ((i <= mid - 1) && (j <= right))
	{
		if (arr[i] <= arr[j])
			temp[k++] = arr[i++];
		else
		{
			temp[k++] = arr[j++];

			inv_count = inv_count + (mid - i);
		}
	}

	while (i <= mid - 1)
		temp[k++] = arr[i++];


	while (j <= right)
		temp[k++] = arr[j++];


	for (i=left; i <= right; i++)
		arr[i] = temp[i];

	return inv_count;
}


long int _mergeSort(vector<long int>& arr, vector<long int>& temp, long int left, long int right)
{
	long int mid, inv_count = 0;
	if (right > left)
	{
		mid = (right + left)/2;
		inv_count = _mergeSort(arr, temp, left, mid);
		inv_count += _mergeSort(arr, temp, mid+1, right);
		inv_count += merge(arr, temp, left, mid+1, right);
	}

	return inv_count;
}


long int countSwaps(vector<long int>& v, long int n) {
    vector<long int> temp (n);
	return _mergeSort(v, temp, 0, n - 1);
}

int main()
{
    long int n;
    cin >> n;
    vector<long int> numbers (n);
    for (long int i = 0; i < n; i++)
    {
        cin >> numbers[i];
    }

    cout << countSwaps(numbers, n) << endl;
}

Test details

Test 1

Verdict: ACCEPTED

input
1

correct output
0

user output
0

Test 2

Verdict: ACCEPTED

input
2
3 7 

correct output
0

user output
0

Test 3

Verdict: ACCEPTED

input
2
3 6 

correct output
0

user output
0

Test 4

Verdict: ACCEPTED

input
2
3 8 

correct output
0

user output
0

Test 5

Verdict: ACCEPTED

input
3
1 2 10 

correct output
0

user output
0

Test 6

Verdict: ACCEPTED

input
3
3 7 10 

correct output
0

user output
0

Test 7

Verdict: ACCEPTED

input
3
3 6 8 

correct output
0

user output
0

Test 8

Verdict: ACCEPTED

input
4
5 5 4 10 

correct output
2

user output
2

Test 9

Verdict: ACCEPTED

input
4
4 5 5 5 

correct output
0

user output
0

Test 10

Verdict: ACCEPTED

input
4
7 10 7 1 

correct output
4

user output
4

Test 11

Verdict: ACCEPTED

input
5
6 6 8 9 7 

correct output
2

user output
2

Test 12

Verdict: ACCEPTED

input
5
5 10 8 10 1 

correct output
5

user output
5

Test 13

Verdict: ACCEPTED

input
5
5 2 1 10 6 

correct output
4

user output
4

Test 14

Verdict: ACCEPTED

input
5
6 1 8 9 3 

correct output
4

user output
4

Test 15

Verdict: ACCEPTED

input
5
10 10 6 2 10 

correct output
5

user output
5

Test 16

Verdict: ACCEPTED

input
5
3 1 9 9 3 

correct output
3

user output
3

Test 17

Verdict: ACCEPTED

input
5
9 10 4 3 9 

correct output
6

user output
6

Test 18

Verdict: ACCEPTED

input
5
1 3 8 4 5 

correct output
2

user output
2

Test 19

Verdict: ACCEPTED

input
5
9 1 10 3 9 

correct output
4

user output
4

Test 20

Verdict: ACCEPTED

input
5
1 4 6 5 5 

correct output
2

user output
2

Test 21

Verdict: ACCEPTED

input
10
6 6 8 9 7 9 6 9 5 7 

correct output
18

user output
18

Test 22

Verdict: ACCEPTED

input
10
5 10 8 10 1 2 4 10 2 3 

correct output
25

user output
25

Test 23

Verdict: ACCEPTED

input
10
5 2 1 10 6 10 5 5 5 4 

correct output
20

user output
20

Test 24

Verdict: ACCEPTED

input
10
6 1 8 9 3 2 6 6 9 5 

correct output
18

user output
18

Test 25

Verdict: ACCEPTED

input
10
10 10 6 2 10 9 8 7 7 6 

correct output
29

user output
29

Test 26

Verdict: ACCEPTED

input
10
3 1 9 9 3 4 10 10 5 1 

correct output
17

user output
17

Test 27

Verdict: ACCEPTED

input
10
9 10 4 3 9 1 1 4 2 10 

correct output
25

user output
25

Test 28

Verdict: ACCEPTED

input
10
1 3 8 4 5 10 8 5 10 4 

correct output
12

user output
12

Test 29

Verdict: ACCEPTED

input
10
9 1 10 3 9 4 6 9 3 5 

correct output
22

user output
22

Test 30

Verdict: ACCEPTED

input
10
1 4 6 5 5 1 2 4 2 1 

correct output
25

user output
25

Test 31

Verdict: ACCEPTED

input
100
589284012 636562060 767928734 ...

correct output
2843

user output
2843

Test 32

Verdict: ACCEPTED

input
100
447773962 773442532 122816 137...

correct output
2446

user output
2446

Test 33

Verdict: ACCEPTED

input
100
468145963 198730372 27838076 5...

correct output
2158

user output
2158

Test 34

Verdict: ACCEPTED

input
100
591414747 75940263 760367935 9...

correct output
2298

user output
2298

Test 35

Verdict: ACCEPTED

input
100
967034924 587586158 185430194 ...

correct output
2580

user output
2580

Test 36

Verdict: ACCEPTED

input
100
238363353 59249204 934941692 8...

correct output
2578

user output
2578

Test 37

Verdict: ACCEPTED

input
100
958701283 356460601 224848374 ...

correct output
2417

user output
2417

Test 38

Verdict: ACCEPTED

input
100
81935404 244103474 837431431 3...

correct output
2315

user output
2315

Test 39

Verdict: ACCEPTED

input
100
937837681 11934038 257096283 9...

correct output
2692

user output
2692

Test 40

Verdict: ACCEPTED

input
100
11139168 391337048 538883744 5...

correct output
2302

user output
2302

Test 41

Verdict: ACCEPTED

input
200
589284012 636562060 767928734 ...

correct output
10624

user output
10624

Test 42

Verdict: ACCEPTED

input
200
447773962 773442532 122816 137...

correct output
9384

user output
9384

Test 43

Verdict: ACCEPTED

input
200
468145963 198730372 27838076 5...

correct output
8760

user output
8760

Test 44

Verdict: ACCEPTED

input
200
591414747 75940263 760367935 9...

correct output
8939

user output
8939

Test 45

Verdict: ACCEPTED

input
200
967034924 587586158 185430194 ...

correct output
9905

user output
9905

Test 46

Verdict: ACCEPTED

input
200
238363353 59249204 934941692 8...

correct output
9851

user output
9851

Test 47

Verdict: ACCEPTED

input
200
958701283 356460601 224848374 ...

correct output
10551

user output
10551

Test 48

Verdict: ACCEPTED

input
200
81935404 244103474 837431431 3...

correct output
9163

user output
9163

Test 49

Verdict: ACCEPTED

input
200
937837681 11934038 257096283 9...

correct output
9346

user output
9346

Test 50

Verdict: ACCEPTED

input
200
11139168 391337048 538883744 5...

correct output
9982

user output
9982

Test 51

Verdict: ACCEPTED

input
1000
589284012 636562060 767928734 ...

correct output
256701

user output
256701

Test 52

Verdict: ACCEPTED

input
1000
447773962 773442532 122816 137...

correct output
243505

user output
243505

Test 53

Verdict: ACCEPTED

input
1000
468145963 198730372 27838076 5...

correct output
252964

user output
252964

Test 54

Verdict: ACCEPTED

input
1000
591414747 75940263 760367935 9...

correct output
246581

user output
246581

Test 55

Verdict: ACCEPTED

input
1000
967034924 587586158 185430194 ...

correct output
241203

user output
241203

Test 56

Verdict: ACCEPTED

input
1000
238363353 59249204 934941692 8...

correct output
251093

user output
251093

Test 57

Verdict: ACCEPTED

input
1000
958701283 356460601 224848374 ...

correct output
256962

user output
256962

Test 58

Verdict: ACCEPTED

input
1000
81935404 244103474 837431431 3...

correct output
250165

user output
250165

Test 59

Verdict: ACCEPTED

input
1000
937837681 11934038 257096283 9...

correct output
246466

user output
246466

Test 60

Verdict: ACCEPTED

input
1000
11139168 391337048 538883744 5...

correct output
249076

user output
249076

Test 61

Verdict: ACCEPTED

input
200000
589284012 636562060 767928734 ...

correct output
9983154934

user output
9983154934

Test 62

Verdict: ACCEPTED

input
200000
447773962 773442532 122816 137...

correct output
9998885834

user output
9998885834

Test 63

Verdict: ACCEPTED

input
200000
468145963 198730372 27838076 5...

correct output
9995310844

user output
9995310844

Test 64

Verdict: ACCEPTED

input
200000
591414747 75940263 760367935 9...

correct output
10000936270

user output
10000936270

Test 65

Verdict: ACCEPTED

input
200000
967034924 587586158 185430194 ...

correct output
10002145347

user output
10002145347

Test 66

Verdict: ACCEPTED

input
200000
238363353 59249204 934941692 8...

correct output
9989708150

user output
9989708150

Test 67

Verdict: ACCEPTED

input
200000
958701283 356460601 224848374 ...

correct output
9997845631

user output
9997845631

Test 68

Verdict: ACCEPTED

input
200000
81935404 244103474 837431431 3...

correct output
10016175198

user output
10016175198

Test 69

Verdict: ACCEPTED

input
200000
937837681 11934038 257096283 9...

correct output
9983428867

user output
9983428867

Test 70

Verdict: ACCEPTED

input
200000
11139168 391337048 538883744 5...

correct output
9971613818

user output
9971613818

Test 71

Verdict: ACCEPTED

input
200000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
0

user output
0