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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 		int t;
  6. 		cin >> t;
  7. 		while(t--)
  8. 		{
  9. 			int n,k;
  10. 			cin >> n >> k;
  11. 			vector<int> v;
  12. 			for(int i=0;i<n;i++)
  13. 			{
  14. 				int a;
  15. 				cin >> a;
  16. 				v.push_back(a);
  17. 			}
  18. 			int c=0,sum=0;
  19. 			for(int i=0;i<n;i++)
  20. 			{
  21.  
  22. 				sum = sum + v[i];
  23.  
  24. 				if((i+1)%k==0)
  25. 				{
  26.  
  27. 					if(sum>0)
  28. 					{
  29. 						c--;
  30.  
  31. 					}
  32. 					else
  33. 					{
  34. 						c++;
  35.  
  36. 					}
  37. 					sum = 0;
  38. 					i++;
  39.  
  40.  
  41. 				}
  42. 				}
  43.  
  44.  
  45. 			cout << c << endl;
  46. 		}
  47. 	return 0;
  48. }
  49.  
  50.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
copy 
5
5 1
0 1 0 0 0
7 3
0 0 0 0 0 0 0
3 1
1 1 1
4 2
0 1 0 1
6 2
0 0 1 0 0 0
stdout
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3
2
-2
-2
3
https://ideone.com/Q5TOYf
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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