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  1. #include <iostream>
  2. using namespace std;
  3. bool yes(int a,int b){
  4. 	int su=0;
  5. 	for(int i=1;i<a;i++){
  6. 		if(a%i==0)su+=i;
  7. 	}
  8. 	if(su==b)return true;
  9. 	return false;
  10. }
  11. int main() {
  12. 	int n,c=0;
  13. 	cin>> n;
  14. 	int* a= new int[n*n];
  15. 	for(int i=0;i<n*n;i++){
  16. 		cin>>a[i];
  17. 		}
  18. 	for(int i=0;i<n*n;i++){
  19. 		for(int j=i+1;j<n*n;j++){
  20. 			if(yes(a[i],a[j]))c++;
  21. 		}
  22. 	}
  23. 	cout<<c;
  24. 	delete[] a;
  25. 	return 0;
  26. }
Success #stdin #stdout 0.01s 5324KB
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stdin
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3
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1
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220
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stdout
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1
https://ideone.com/bVuQL4
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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