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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Main
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		Scanner in = new Scanner(System.in);
  10. 		int[][] x = new int[2001][2001];
  11. 		int n = in.nextInt();
  12. 		int move;
  13. 		int xPos=1001, yPos=1001;
  14. 		for(int i = 0; i < n; i++) {
  15. 			move = in.nextInt();
  16. 			if(x[xPos][yPos] == 1) { 
  17.             	System.out.print(i);
  18.             	return;
  19.         	}
  20.         	else x[xPos][yPos]=1;
  21. 	        if(move == 1) {
  22. 	            xPos--;
  23. 	            yPos++;
  24. 	        }
  25. 	        if(move == 2) {
  26. 	            yPos++;
  27. 	        }
  28. 	        if(move == 3) {
  29. 	            xPos++;
  30. 	            yPos++;
  31. 	        }
  32. 	        if(move == 4) {
  33. 	            xPos++;
  34. 	        }
  35. 	        if(move == 5) {
  36. 	            xPos++;
  37. 	            yPos--;
  38. 	        }
  39. 	        if(move == 6) {
  40. 	            yPos--;
  41. 	        }
  42. 	        if(move == 7) {
  43. 	            xPos--;
  44. 	            yPos--;
  45. 	        }
  46. 	        if(move == 8) {
  47. 	            xPos--;
  48. 	        }
  49. 		}
  50. 		System.out.print("Ok" + "\n" + (Math.abs(xPos-1001)+Math.abs(yPos-1001)));
  51. 	}
  52. }
Success #stdin #stdout 0.07s 2184192KB
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stdin
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9 2 2 3 3 4 4 7 7 7
stdout
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Ok
2
https://ideone.com/mIPdUa
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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