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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	vector<int> res;
  7. 	cin>>n;
  8. 	if (n%2 == 1)
  9. 	{
  10. 		n -= 3;
  11. 		res.push_back(3);
  12. 	}
  13. 	while (n > 0)
  14. 	{
  15. 		res.push_back(2);
  16. 		n -= 2;
  17. 	}
  18. 	cout<<res.size()<<endl;
  19. 	for (int i=0; i<res.size(); i++)
  20. 	cout<<res[i]<<" ";
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 4544KB
comments (?)
stdin
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6
stdout
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3
2 2 2
https://ideone.com/Jcsmea
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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