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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     // from https://ru.stackoverflow.com/a/813631/23044
  6. 	int a[] = { -1 };
  7.     int size = sizeof( a ) / sizeof( a[ 0 ] );
  8.  
  9. 	for (int j = 1; j < size; j++)
  10. 	{
  11. 		for (int i = 0; i < size - j; i++)
  12. 		{
  13. 			if (a[ i ] > a[ i + 1 ])
  14. 			{
  15. 				int b = a[ i ];
  16. 				a[ i ] = a[ i + 1 ];
  17. 				a[ i + 1 ] = b;
  18. 			}
  19. 		}
  20. 	}
  21.  
  22. 	for (int i = 1; i < size; i++)
  23. 	{
  24. 		if (a[ i ] - a[ i - 1 ] > 1)
  25. 		{
  26. 			std::cout << a[ i - 1 ] + 1 << "\n";
  27. 			break;
  28. 		}
  29. 	}
  30. }
Success #stdin #stdout 0s 4368KB
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https://ideone.com/j6oQus
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
secret

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