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- #include <stdio.h>
- int main()
- {
- int t,n;
- scanf("%d",&t);
- while(t--)
- {
- scanf("%d",&n);
- int arr[n],i;
- for(i=0;i<n;i++)
- {
- scanf("%d",&arr[i]);
- }
- int max=arr[0];
- int min=arr[0];
- for(i=0;i<n;i++)
- {
- if(arr[i]>max) max=arr[i];
- if(arr[i]<min) min=arr[i];
- }
- int ans=(max-min)*2;
- printf("%d\n",ans);
- }
- return 0;
- }
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