import java.util.*;
public class FirstDecisionProgram {
  
  
  public static void main(String[] args) { 
    
    Scanner input = new Scanner(System.in);
    
    System.out.print("Enter an integer: ");
    int number = input.nextInt();
    
    if(number >= 0) {
      System.out.println("You entered " + number);
    }else{ // number < 0
      System.out.println("You entered a negative number.");
    }
    
  }
  
  
}