Source code for submission s685

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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. 		if (d == 0) {
  17. 			printf("0\n");
  18. 		}
  19. 		else if (R == 1 || C == 1) {
  20. 			printf("impossible\n");
  21. 		}
  22. 		else if (R == 2 || C == 2) {
  23. 			if (d % 3 == 0) {
  24. 				printf("%d\n", d/3);
  25. 			} else printf("impossible\n");
  26. 		} else {
  27. 			switch(d) {
  28. 				case 1:
  29. 					printf("3\n");
  30. 					break;
  31. 				case 2:
  32. 					printf("2\n");
  33. 					break;
  34. 				case 3:
  35. 					printf("1\n");
  36. 					break;
  37. 				case 4:
  38. 					printf("4\n");
  39. 					break;
  40. 				case 5:
  41. 					printf("3\n");
  42. 					break;
  43. 			}
  44. 			if (d > 5) {
  45. 				int result = (d % 3) > 0 ? 1 : 0;
  46. 				result += d/3;
  47. 				printf("%d\n", result);
  48. 			}
  49. 		}
  50. 	}
  51. 	return 0;
  52. }
  53.  

Diff to submission s678

grasshop.c

--- c4.s678.cteam074.grasshop.c.0.grasshop.c
+++ c4.s685.cteam074.grasshop.c.0.grasshop.c
@@ -14,5 +14,8 @@
         {
                 int d = get_dist(Gr, Gc, Lr, Lc);
-                if (R == 1 || C == 1) {
+                if (d == 0) {
+                        printf("0\n");
+                }
+                else if (R == 1 || C == 1) {
                         printf("impossible\n");
                 }