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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(void) {
  5. 	int i,n,x,c,d,swap,sum=0,j;
  6. 	scanf("%d",&n);
  7. 	while(n--)
  8. 	{
  9. 		scanf("%d",&x);
  10. 		int *a=(int*)malloc(sizeof(int)*x);
  11. 	for(i=0;i<x;i++)
  12. 		scanf("%d",&a[i]);
  13. 	//	for(i=0;i<x;i++)
  14. 	//	printf("%d",a[i]);
  15. 		for (c = 0 ; c < ( x - 1 ); c++)
  16.   {
  17.     for (d = 0 ; d < x - c - 1; d++)
  18.     {
  19.       if (a[d] < a[d+1]) 
  20.       {
  21.         swap       = a[d];
  22.         a[d]   = a[d+1];
  23.         a[d+1] = swap;
  24.       }
  25.     }
  26.   }
  27.  //for(i=0;i<x;i++)
  28. //		printf("%d\n",a[i]);
  29. 		j=x-1;
  30. 		i=0;
  31. 		while(i<=j)
  32. 		{
  33. 			if(1+i>j)
  34. 			{sum=sum+a[0+i];
  35. 			break;}
  36. 			else
  37. 			{
  38. 				sum=a[0+i]+a[1+i]+sum;
  39. 			i=i+4;
  40. 		}
  41. 		}
  42. 	printf("%d\n",sum);
  43. 		sum=0;
  44. 	}
  45.  
  46. 	return 0;
  47. }
  48.  
Success #stdin #stdout 0s 2188KB
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https://ideone.com/7dZv5U
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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