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  1. #include <stdio.h>
  2. #include <queue>
  3. #include <map>
  4. #include <string>
  5. #include <stdlib.h>
  6. #define SWAP(a, b) a^=b; b^=a; a^=b;
  7. using namespace std;
  8.  
  9. void shiftBlock(string s, int a, int b);
  10. queue<int> q;
  11. map<string, int> m;
  12.  
  13. int main() {
  14. 	//int resultState[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0};
  15. 	int start = 0;
  16.  
  17. 	for(int i=100000000; i>=1; i/=10){
  18. 		int x;
  19. 		scanf("%d ", &x);
  20. 		if(x==0) x=9;
  21. 		start += i*x;
  22. 	}
  23.  
  24. 	q.push(start);
  25. 	m[to_string(start)] = 0;
  26.  
  27. 	while(!q.empty()){
  28. 		string now = to_string(q.front());
  29. 		q.pop();
  30.  
  31. 		for(int i=0; i<9; i++){
  32. 			if(now[i] != '9') continue;
  33.  
  34. 			switch(i){
  35. 				case 0:
  36. 					shiftBlock(now, i, i+1);
  37. 					shiftBlock(now, i, i+3);
  38. 					break;
  39. 				case 1:
  40. 					shiftBlock(now, i, i-1);
  41. 					shiftBlock(now, i, i+3);
  42. 					shiftBlock(now, i, i+1);
  43. 					break;
  44. 				case 2:
  45. 					shiftBlock(now, i, i-1);
  46. 					shiftBlock(now, i, i+3);
  47. 				case 3:
  48. 					shiftBlock(now, i, i+3);
  49. 					shiftBlock(now, i, i+1);
  50. 					shiftBlock(now, i, i-3);
  51. 				case 4:
  52. 					shiftBlock(now, i, i+1);
  53. 					shiftBlock(now, i, i-1);
  54. 					shiftBlock(now, i, i+3);
  55. 					shiftBlock(now, i, i-3);
  56. 				case 5:
  57. 					shiftBlock(now, i, i-1);
  58. 					shiftBlock(now, i, i+3);
  59. 					shiftBlock(now, i, i-3);
  60. 				case 6:
  61. 					shiftBlock(now, i, i-3);
  62. 					shiftBlock(now, i, i+1);
  63. 				case 7:
  64. 					shiftBlock(now, i, i+1);
  65. 					shiftBlock(now, i, i-1);
  66. 					shiftBlock(now, i, i-3);
  67. 				case 8:
  68. 					shiftBlock(now, i, i-1);
  69. 					shiftBlock(now, i, i-3);
  70. 			}
  71. 		}
  72.  
  73. 	}
  74. 	printf("%d", m["123456789"]);
  75. 	return 0;
  76. }
  77.  
  78. void shiftBlock(string s, int a, int b){
  79. 	string temp = s;
  80. 	SWAP(temp[a], temp[b]);
  81. 	q.push( atoi(temp.c_str()));
  82. 	m[temp] = m[s] + 1;
  83. }
  84.  
Runtime error #stdin #stdout #stderr 0s 80768KB
comments (?)
stdin
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1 0 3
4 2 5
7 8 6
stdout
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Standard output is empty
stderr
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terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc
https://ideone.com/pK2QrO
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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