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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6.  
  7. int main()
  8. {
  9. 	int n;
  10. 	cin >> n;
  11. 	int ans=0;
  12. 	int k = 0;
  13. 	for (int i = 0; i <= n; i++) {
  14. 		ans += k;
  15. 		k += 2;
  16.  
  17. 	}
  18. 	cout << ++ans << endl;
  19.     return 0;
  20. }
Success #stdin #stdout 0s 4372KB
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Standard input is empty
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1073577991
https://ideone.com/PPSm7t
Юный садовод.3. Циклические вычисления
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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