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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int getSum(int arr[],int n){
  4. 	unordered_map<int,int>m;
  5. 	int sum=0;
  6. 	for(int i=0;i<n;i++){
  7. 		m[arr[i]]++;
  8. 	}
  9. 	for(auto itr=m.begin();itr!=m.end();itr++){
  10. 		if(itr->first<itr->second){
  11. 			sum+=itr->second;
  12. 		}
  13. 	}
  14. 	return sum;
  15. }
  16.  
  17. int main() {
  18. 	// your code goes here
  19. 	int n;
  20. 	cin>>n;
  21. 	int arr[n];
  22. 	for(int i=0;i<n;i++){
  23. 		cin>>arr[i];
  24. 	}
  25. 	cout<<getSum(arr,n);
  26. 	return 0;
  27. }
Success #stdin #stdout 0.01s 5308KB
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stdin
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6
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stdout
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3
https://ideone.com/ACOqwb
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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