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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. long long n,tmp;
  5. int main()
  6. {
  7. 	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  8. 	cin>>n;
  9. 	if(n == 1)
  10. 	{
  11. 		cout<<3<<'\n';
  12. 	}
  13. 	else if(n == 2)
  14. 	{
  15. 		cout<<5<<'\n';
  16. 	}
  17. 	else
  18. 	{
  19. 		tmp = n/3;
  20. 		cout<<tmp*4+3+(n%3)<<'\n';
  21. 	}
  22. }
Success #stdin #stdout 0.01s 5316KB
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https://ideone.com/V5wM5x
language:
C++14 (clang 8.0)
created:
13 days ago
visibility:
public

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