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hkshakib

Untitled

Jul 28th, 2019
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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. {
  9. int n;
  10. cin>>n;
  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 cnt=0;
  19. int k=v[0];
  20. for(int i=0; i<v.size(); i++)
  21. {
  22. if(abs(v[i]-v[0])<=1)
  23. cnt++;
  24.  
  25. }
  26. cout<<cnt<<endl;
  27. }
  28. }
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