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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	int t;
  7. 	cin>>t;
  8. 	 while(t--) { 
  9. 	 	int temp; 
  10. 	 	int count=0; int n; int A[100010]; 
  11. 	 	for(int c=0;c<100010;c++) 
  12. 	 	  A[c]=0; 
  13. 	 	  cin>>n; 
  14. 	 	  for(int a=1;a<=n;a++) 
  15. 	 	  { 
  16. 	 	  	cin>>temp; A[temp]++; 
  17. 	 	  } 
  18. 	 for( int a=1;a<=n;a++)
  19. 	 { 
  20. 	 	if(A[a]!=0) count++; 
  21. 	 } 
  22. 	 cout<<count<<"\n"; }
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 3616KB
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https://ideone.com/IHNKLg
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
secret

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