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  1.  
  2. import java.io.BufferedReader;
  3. import java.io.IOException;
  4. import java.io.InputStreamReader;
  5.  
  6. //http://p...content-available-to-author-only...j.com/problems/ZABAWA/
  7.  
  8. public class Main {
  9.  
  10. 	public static void main(String[] args) throws IOException {
  11. 		new Main().zadanie();
  12. 	}
  13.  
  14. 	private void zadanie() throws IOException {
  15. 		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
  16.         String s;
  17.         String[] tab;
  18.         int x, y;
  19.  
  20.         while ((s = in.readLine()) != null) { 
  21.                 tab = s.split(" ");
  22.                 x = Integer.parseInt(tab[0]);
  23.                 y = Integer.parseInt(tab[1]);
  24. 			if (isPrime(x)) {
  25. 				y++;
  26. 				while (true) {
  27. 					if (isPalidrome(y)) {
  28. 						System.out.println(y);
  29. 						break;
  30. 					} else {
  31. 						y++;
  32. 					}
  33. 				}
  34. 			} else {
  35. 				y++;
  36. 				while (true) {
  37. 					if (isPalidrome(y)) {
  38. 						System.out.println(y);
  39. 						break;
  40. 					} else {
  41. 						y--;
  42. 					}
  43. 				}
  44. 			}
  45. 		}
  46. 	}
  47.  
  48. 	private boolean isPrime(int n) {
  49. 		for (int i = 2; i < Math.sqrt(n)+1; i++) {
  50. 			if (n % i == 0) {
  51. 				return false;
  52. 			}
  53. 		}
  54. 		return true;
  55. 	}
  56.  
  57. 	private boolean isPalidrome(int n) {
  58. 		String s = n + "";
  59. 		return new StringBuilder(s).reverse().toString().equals(s) ? true : false;
  60. 	}
  61. }
  62.  
Success #stdin #stdout 0.04s 712192KB
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https://ideone.com/UVtuCJ
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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