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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <cmath>
  4.  
  5. using namespace std;
  6.  
  7. const int MAXN = 49;
  8.  
  9. int a [MAXN + 2][MAXN + 2] = {0};
  10.  
  11. int main ()
  12. {
  13. 	int n;
  14. 	cin >> n;
  15.  
  16. 	if ((n - (n * n / 2) / (n - 1)) % 2 != 0)
  17. 	{
  18. 		int odd = 1, even = 2, change = (n / 2) * n + 1;
  19. 		for (int i = 1; i <= n; i++)
  20. 		{
  21. 			if (i == n / 2 + 1)
  22. 			{
  23. 				for (int j = 1; j <= n; j++)
  24. 				{
  25. 					a [i][j] = odd;
  26. 					odd += 2;
  27. 				}
  28. 			}
  29. 			else
  30. 			{
  31. 				for (int j = 1; j <= n; j++)
  32. 				{
  33. 					if (j % 2 != 0)
  34. 					{
  35. 						a [i][j] = even;
  36. 						even += 2;
  37. 					}
  38. 					else
  39. 					{
  40. 						a [i][j] = odd;
  41. 						odd += 2;
  42. 					}
  43. 				}
  44. 			}
  45. 		}
  46. 	}
  47. 	else
  48. 	{
  49. 		int even = 2, odd = 1, start = n / 2 + 2, end = n / 2;
  50. 		for (int i = 1; i <= n; i++)
  51. 		{
  52. 			a [i][i] = odd;
  53. 			odd += 2;
  54. 		}
  55.  
  56. 		for (int i = 1; i <= end; i++)
  57. 		{
  58. 			for (int j = start; j <= n; j++)
  59. 			{
  60. 				a [i][j] = odd;
  61. 				odd += 2;
  62. 			}
  63. 		}
  64. 		for (int i = start; i <= n; i++)
  65. 		{
  66. 			for (int j = 1; j <= end; j++)
  67. 			{
  68. 				a [i][j] = odd;
  69. 				odd += 2;
  70. 			}
  71. 		}
  72. 		for (int i = 1; i <= n; i++)
  73. 		{
  74. 			for (int j = 1; j <= n; j++)
  75. 			{
  76. 				if (a [i][j] == 0)
  77. 				{
  78. 					a [i][j] = even;
  79. 					even += 2;
  80. 				}
  81. 			}
  82. 		}
  83. 	}
  84.  
  85. 	int width = (int) log ((double) n * n) / log (10.0) + 1;
  86. 	//cout << width << "\n";
  87. 	for (int i = 1; i <= n; i++)
  88. 	{
  89. 		for (int j = 1; j <= n; j++)
  90. 			cout << setw (width) << a [i][j] << " ";
  91. 		cout << "\n";
  92. 	}
  93.  
  94. 	return 0;
  95. }
Runtime error #stdin #stdout 0s 3476KB
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/pCBf77
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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