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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct Table
  5. {
  6. 	int digit2;
  7. 	int digit10;
  8. 	int prev;
  9. 	int n;
  10. };
  11. int main() {
  12. 	int usedtable[10000];
  13. 	Table table[10000];
  14. 	int i;
  15. 	int target = 2439;
  16. 	int now, end;
  17. 	for(i = 0 ; i < 10000 ; i++)
  18. 	{
  19. 		usedtable[i] = 0;
  20. 	}
  21. 	now = 0; end = 1;
  22. 	table[0].n = 0;
  23. 	while(end > now)
  24. 	{
  25. 		for(i = 0 ; i < 10 ; i++)
  26. 		{
  27. 			if((table[now].n + target * i) % 10 < 2)
  28. 			{
  29. 				int nextnum = (table[now].n + target * i);
  30. 				if(nextnum == 1)
  31. 				{
  32. 					int n = now;
  33. 					cout << target << " *" << endl;
  34. 					cout << 0;
  35. 					while(n)
  36. 					{
  37. 						cout << table[n].digit10;
  38. 						n = table[n].prev;
  39. 					}
  40. 					cout << " =" << endl;
  41. 					n = now;
  42. 					cout << 1;
  43. 					while(n)
  44. 					{
  45. 						cout << table[n].digit2;
  46. 						n = table[n].prev;
  47. 					}
  48. 					cout<<endl;
  49. 				}
  50. 				if(usedtable[nextnum / 10]) continue;
  51. 				usedtable[nextnum / 10] = 1;
  52. 				table[end].n = nextnum / 10;
  53. 				table[end].digit2 = nextnum % 10;
  54. 				table[end].digit10 = i;
  55. 				table[end].prev = now;
  56. 				end++;
  57. 			}
  58. 		}
  59. 		now++;
  60. 	}
  61. 	return 0;
  62. }
Success #stdin #stdout 0s 3212KB
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stdin
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Standard input is empty
stdout
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2439 *
00004100496519520340344449 =
10001111011110110100111111
https://ideone.com/CiNF3n
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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