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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5. 	int t;
  6. 	cin>>t;
  7. 	while(t--){
  8. 		int n,k;
  9. 		cin>>n>>k;
  10. 		int *array = new int[n];
  11. 		for(int i = 0;i<n;i++){
  12. 			cin>>array[i];
  13. 		}
  14. 		int p = 0;
  15. 		for(int i=0;i<n-1;i++){
  16. 			for(int j=i+1;j<n;j++){
  17. 				if(array[i]>array[j]){
  18. 					p++;
  19. 				}
  20. 			}
  21. 	 }
  22. 		int ans = p*k,q=0;
  23. 		for(int i=0;i<n;i++){
  24. 			for(int j=0;j<n;j++){
  25. 				if(array[i]>array[j]){
  26. 					q++;
  27. 				}
  28. 			}
  29. 		}
  30. 		int ans1 = ans + (k*(k-1)*q)/2;
  31. 		cout<<ans1<<endl;
  32. 	}
  33. 	return 0;
  34. }
Success #stdin #stdout 0s 4548KB
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https://ideone.com/8dUYn3
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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