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  1. #include<iostream>
  2.  
  3. using namespace std;
  4.  
  5. main(){
  6. 	int n;
  7. 	cin >> n;
  8.  
  9. 	int count = 1;
  10. 	int d = 1;
  11. 	while (n >= d) {
  12. 		n -= d;
  13. 		count++;
  14. 		d += count;
  15. 	}
  16.  
  17. 	cout << count - 1 << endl;
  18. }
  19.  
Success #stdin #stdout 0s 5276KB
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https://ideone.com/E5uxse
language:
C++14 (gcc 8.3)
created:
12 hours ago
visibility:
public

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