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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int gcd(int a, int b){
  5. 	if(a==0)
  6. 		return b;
  7. 	return gcd(b%a, a);
  8. }
  9.  
  10. int main(){
  11. 	int t;
  12. 	cin >> t;
  13. 	while(t--){
  14. 		int n;
  15. 		cin >> n;
  16. 		int a[n];
  17. 		for(int i=0;i<n;i++)
  18. 			cin >> a[i];
  19. 		// cout << endl;
  20. 		int count[n]={0};
  21. 		for(int i=0;i<n;i++){
  22. 			int k=i;
  23. 			for(int j=i+1;j<n;j++){
  24. 				if(gcd(a[k],a[j])>1){
  25. 					k=k+1;
  26. 					count[i]++;
  27. 				}
  28. 			}
  29. 		}
  30. 		// for(int i=0;i<n;i++)
  31. 		// 	cout << count[i];
  32. 		int max=0;
  33. 		for(int i=0;i<n;i++){
  34. 			if(max<count[i])
  35. 				max=count[i];
  36. 		}
  37. 		cout << max+1 << endl;
  38. 	}
  39. 	return 0;
  40. }
Success #stdin #stdout 0s 3472KB
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https://ideone.com/HdVEOr
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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