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Jan 17th, 2018
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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.  
  7. int t,i,max,n,r,p,j,arr[200],ans;
  8. int gap,k;
  9. arr[0]=0;
  10. cin>>t;
  11. for(k=0; k<t; k++)
  12. {
  13. max=0;
  14. cin>>n>>r>>p;
  15. for(i=1; i<=n; i++)
  16. {
  17. cin>>arr[i];
  18. }
  19. arr[i]=r;
  20.  
  21. sort(arr,arr+(n+2));
  22. for(j=1; j<=(n+1); j++)
  23. {
  24. gap=arr[j]-arr[j-1];
  25. if(gap>max)
  26. {
  27. max=gap;
  28. }
  29.  
  30. }
  31. if(max>p)
  32. {
  33. ans=max-p;
  34. cout<<ans<<endl;
  35. }
  36. else
  37. {
  38. ans=0;
  39. cout<<ans<<endl;
  40. }
  41. return 0;
  42. }
  43. }
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