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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t,c=0;
  6. 	cin >> t;
  7. 	vector<int> v;
  8. 	while(t--)
  9. 	{
  10. 		int n;
  11. 		cin >> n;
  12. 		v.push_back(n);
  13. 	}
  14. 	for(int i=0;i<t-1;i++)
  15. 	{
  16. 		if(v[i]==v[i+1])
  17. 		{
  18. 			c++;
  19. 		}
  20. 	}
  21. 	if(c == t-1)
  22. 	{
  23. 		cout << "YES" << endl;
  24. 	}
  25. 	else
  26. 	{
  27. 		cout << "NO" << endl;
  28. 	}
  29. 	return 0;
  30. }
Success #stdin #stdout 0s 5324KB
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stdin
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4
3 3 3 3
stdout
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NO
https://ideone.com/shHuAT
language:
C++ (gcc 8.3)
created:
7 days ago
visibility:
public

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