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import java.util.Arrays;

class Main {
  public static void main(String[] args) {
    System.out.println(Arrays.toString(range(20)));
  }
  public static int[] range(int x) {
    int[] ranged = new int[x];
    for(int i=0;i<x;i++) {
        ranged[i] = i;
  }
  return ranged;
  }
}