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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int D,a,b;
  7.  
  8. int main ()
  9. {
  10. 	cin>>D;
  11. 	for (int i=1;i<=D;i++)
  12. 	{
  13. 		cin>>a>>b;a=a%10;
  14. 		switch (a)
  15. 		{
  16. 			case 0:
  17. 				cout<<0;
  18. 				break;
  19. 			case 1:
  20. 				cout<<1;
  21. 				break;
  22. 			case 2:
  23. 				switch (b%4)
  24. 				{
  25. 					case 1:
  26. 						cout<<2;
  27. 						break;
  28. 					case 2:
  29. 						cout<<4;
  30. 						break;
  31. 					case 3:
  32. 						cout<<8;
  33. 						break;
  34. 					case 0:
  35. 						cout<<6;
  36. 						break;
  37. 				}
  38. 				break;
  39. 			case 3:
  40. 				switch (b%4)
  41. 				{
  42. 					case 1:
  43. 						cout<<3;
  44. 						break;
  45. 					case 2:
  46. 						cout<<9;
  47. 						break;
  48. 					case 3:
  49. 						cout<<7;
  50. 						break;
  51. 					case 0:
  52. 						cout<<1;
  53. 						break;
  54. 				}
  55. 				break;
  56. 			case 4:
  57. 				switch (b%2)
  58. 				{
  59. 					case 1:
  60. 						cout<<4;
  61. 						break;
  62. 					case 0:
  63. 						cout<<6;
  64. 						break;
  65.  
  66. 				}
  67. 				break;
  68. 			case 5:
  69. 				cout<<5;
  70. 				break;
  71. 			case 6:
  72. 				cout<<6;
  73. 				break;
  74. 			case 7:
  75. 				switch (b%4)
  76. 				{
  77. 					case 1:
  78. 						cout<<7;
  79. 						break;
  80. 					case 2:
  81. 						cout<<9;
  82. 						break;
  83. 					case 3:
  84. 						cout<<3;
  85. 						break;
  86. 					case 0:
  87. 						cout<<1;
  88. 						break;
  89. 				}
  90. 				break;
  91. 			case 8:
  92. 				switch (b%4)
  93. 				{
  94. 					case 1:
  95. 						cout<<8;
  96. 						break;
  97. 					case 2:
  98. 						cout<<4;
  99. 						break;
  100. 					case 3:
  101. 						cout<<2;
  102. 						break;
  103. 					case 0:
  104. 						cout<<6;
  105. 						break;
  106. 				}
  107. 				break;
  108. 			case 9:
  109. 				switch (b%2)
  110. 				{
  111. 					case 1:
  112. 						cout<<9;
  113. 						break;
  114. 					case 0:
  115. 						cout<<1;
  116. 						break;
  117. 				}
  118. 				break;
  119. 		}
  120.  
  121.  
  122. 	}
  123. 	return 0;
  124. }
Success #stdin #stdout 0s 3460KB
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https://ideone.com/6mBl2N
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
secret

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