URI PROBLEMA: 1072 - Intervalo 2

import java.io.IOException;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) throws IOException {
     int N , X, in = 0, out = 0;
  int a =10,b=20 ;
 
  Scanner scan =new Scanner(System.in);
 
  N =scan.nextInt();
  for (int i = 1; i <= N; i++) {
   X =scan.nextInt();
   if (X >= a && X <= b) {
    in += 1;
   }else {
    out += 1;
   }
  }
  System.out.print(in+" in\n"+out +" out\n");
    }

}