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  1. import java.io.*;
  2. import java.util.*;
  3. import java.util.concurrent.*;
  4.  
  5. public class Main {
  6. 	public static void main(String[] args) throws IOException {
  7. 		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  8. 		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
  9. 		StringTokenizer st = new StringTokenizer(br.readLine());
  10.  
  11. 		int T = Integer.parseInt(st.nextToken());
  12.  
  13. 		List<Integer>[] info = new ArrayList[10];
  14.  
  15. 		info[0] = new ArrayList<>(Arrays.asList(0));
  16. 		info[1] = new ArrayList<>(Arrays.asList(1));
  17. 		info[2] = new ArrayList<>(Arrays.asList(2, 4, 8, 6));
  18. 		info[3] = new ArrayList<>(Arrays.asList(3, 9, 7, 1));
  19. 		info[4] = new ArrayList<>(Arrays.asList(4, 6));
  20. 		info[5] = new ArrayList<>(Arrays.asList(5));
  21. 		info[6] = new ArrayList<>(Arrays.asList(6));
  22. 		info[7] = new ArrayList<>(Arrays.asList(7, 9, 3, 1));
  23. 		info[8] = new ArrayList<>(Arrays.asList(8, 4, 2, 6));
  24. 		info[9] = new ArrayList<>(Arrays.asList(9, 1));
  25.  
  26. 		for (int test = 1; test <= T; test++) {
  27. 			st = new StringTokenizer(br.readLine());
  28.  
  29. 			int a = Integer.parseInt(st.nextToken());
  30. 			int b = Integer.parseInt(st.nextToken());
  31.  
  32. 			int idx = -1;
  33.  
  34. 			if(b % info[a % 10].size() == 0) {
  35. 				idx = info[a % 10].size() - 1;
  36. 			} else {
  37. 				idx = b % info[a % 10].size() - 1;
  38. 			}
  39.  
  40. 			bw.write(info[a % 10].get(idx) + "\n");
  41.  
  42. 		}
  43.  
  44. 		bw.flush();
  45. 		br.close();
  46. 		bw.close();
  47. 	}
  48.  
  49. }
  50.  
Success #stdin #stdout 0.12s 55692KB
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https://ideone.com/QYzVy3
language:
Java (HotSpot 12)
created:
148 days ago
visibility:
public

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