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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7. 	long long tests, n;
  8.  
  9. 	cin >> tests;
  10.  
  11. 	while (tests--)
  12. 	{
  13. 		cin >> n;
  14.  
  15. 		cout << (int)ceil( (sqrt(8 * n + 1) - 1) / 2 ) << "\n";
  16. 	}
  17. }
Success #stdin #stdout 0s 5520KB
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stdin
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3
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stdout
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2
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3
https://ideone.com/gyLlRv
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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