Source code for submission s893

Go to diff to previous submission

grasshop.c

  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int R,C, Lr, Lc, Gr, Gc;
  5.  
  6. int get_dist(int a, int b, int x, int y)
  7. {
  8. 	return fabs(x-a) + fabs(y-b);
  9. }
  10.  
  11. int main()
  12. {
  13. 	while(scanf("%d %d %d %d %d %d", &R,&C,&Gr,&Gc,&Lr,&Lc) == 6)
  14. 	{
  15. 		int d = get_dist(Gr, Gc, Lr, Lc);
  16. 		int x = fabs(Gr-Lr);
  17. 		int y = fabs(Gc-Lc);
  18. 		int result = 0;
  19. 		if (d == 0) {
  20. 			printf("0\n");
  21. 		}
  22. 		else if (R == 1 || C == 1) {
  23. 			printf("impossible\n");
  24. 		} else if (R == 2 || C == 2) {
  25. 			if (d % 3 == 0) {
  26. 				printf("%d\n", d/2);
  27. 			} else printf("impossible\n");
  28. 		} else if (R == 3 && C == 3) {
  29. 			if (d == 2) printf("impossible\n");
  30. 			else if (Lr == 2 && Lc == 2) printf("impossible\n");
  31. 			else {
  32. 				switch(d) {
  33. 				case 1:
  34. 					printf("3\n");
  35. 					break;
  36. 				case 3:
  37. 					printf("1\n");
  38. 					break;
  39. 				case 4:
  40. 					printf("4\n");
  41. 					break;
  42. 				case 5:
  43. 					printf("3\n");
  44. 					break;
  45. 			}
  46. 			}
  47. 		} else if (x*2 < y) {
  48. 			result = y/2;
  49. 			result += (y%2 > 0) ? 1 : 0;
  50. 			printf("%d\n", result);
  51. 		} else if (y*2 < x) {
  52. 			result = x/2;
  53. 			result += (x%2 > 0) ? 1 : 0;
  54. 			printf("%d\n", result);
  55. 		} else {
  56. 			switch(d) {
  57. 				case 1:
  58. 					printf("3\n");
  59. 					break;
  60. 				case 2:
  61. 					printf("2\n");
  62. 					break;
  63. 				case 3:
  64. 					printf("1\n");
  65. 					break;
  66. 				case 4:
  67. 					printf("4\n");
  68. 					break;
  69. 				case 5:
  70. 					printf("3\n");
  71. 					break;
  72. 			}
  73. 			if (d > 5) {
  74. 				result += (d % 3) > 0 ? 1 : 0;
  75. 				result += d/3;
  76. 				printf("%d\n", result);
  77. 			}
  78. 		}
  79. 	}
  80. 	return 0;
  81. }
  82.  

Diff to submission s804

grasshop.c

--- c4.s804.cteam074.grasshop.c.0.grasshop.c
+++ c4.s893.cteam074.grasshop.c.0.grasshop.c
@@ -28,4 +28,5 @@
                 } else if (R == 3 && C == 3) {
                         if (d == 2) printf("impossible\n");
+                        else if (Lr == 2 && Lc == 2) printf("impossible\n");
                         else {
                                 switch(d) {
@@ -33,7 +34,4 @@
                                         printf("3\n");
                                         break;
-                                case 2:
-                                        printf("2\n");
-                                        break;
                                 case 3:
                                         printf("1\n");