[알고리즘] 백준 10093 JAVA

 

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
  
  public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer(br.readLine());
    long a = Long.parseLong(st.nextToken());
    long b = Long.parseLong(st.nextToken());
    if (a == b) {
      System.out.println(0);
    }
    else if (a > b) {
      System.out.println( a - b - 1);
      for (long i = b+1; i < a; i++) {
        System.out.print(i + " ");
      }
    }
    else if (a < b) {
      System.out.println( b -a - 1);
      for (long i = a+1; i < b; i++) {
        System.out.print(i + " ");
      }
    }
  }
}