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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n, k=1, count=0;
  6. 	cin >> n;
  7. 	int a[n];
  8. 	for(int i = 0; i < n; i++)
  9. 	{
  10. 		cin >> a[i];
  11. 	}
  12.  
  13. 	for(int i = 1; i < n; i++)
  14. 	{
  15. 		if(a[i] == a[i-1])
  16. 			k++;
  17. 		else if(k >= 3)
  18. 		{
  19. 			count += k;
  20. 			k=1;
  21. 		}
  22. 		else
  23. 			k=1;
  24. 	}
  25. 	if(k >= 3)
  26. 		count += k;
  27. 	cout << count;
  28. 	return 0;
  29. }
Success #stdin #stdout 0s 4520KB
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stdin
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8
1 3 3 3 2 2 2 2
stdout
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7
https://ideone.com/7ienw4
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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