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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.  
  6. 	int n;
  7. 	cin>>n;
  8.  
  9. 	int a[n];
  10. 	for(int i=0;i<n;i++)
  11. 	{
  12. 		cin>>a[i];
  13. 	}
  14.  
  15. 	int indices[n+1];
  16.  
  17. 	for(int i=0;i<n;i++)
  18. 	{
  19. 		indices[a[i]]=i;
  20. 	}
  21.  
  22. 	int ans=1;
  23. 	for(int i=1;i<n;i++)
  24. 	{
  25. 		if(indices[i] > indices[i+1])
  26. 		{
  27. 			ans++;
  28. 		}
  29. 	}
  30.  
  31. 	cout<<ans<<endl;
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 5292KB
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stdin
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stdout
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https://ideone.com/JWUkZt
language:
C++14 (gcc 8.3)
created:
12 days ago
visibility:
public

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