class Person:
    def __init__(self,initialAge):
        # Add some more code to run some checks on initialAge
        if initialAge > 0:
            self.initialAge = initialAge
        else:
            self.initialAge = 0
            print("Age is not valid, setting age to 0.")
    def amIOld(self):
        # Do some computations in here and print out the correct statement to the console
        if self.initialAge < 13:
            print("You are young.")
        elif self.initialAge >= 13 and self.initialAge < 18:
            print("You are a teenager.")
        else:
            print("You are old.")
    def yearPasses(self):
        # Increment the age of the person in here
        self.initialAge += 1

// for javascript
function Person(initialAge){
    // Add some more code to run some checks on initialAge
    
    if(initialAge < 0){
        initialAge=0;
        console.log("Age is not valid, setting age to 0.");
    }
  this.amIOld=function(){
   // Do some computations in here and print out the correct statement to the console
   if(initialAge<13){
       console.log("You are young.")
   }else if(initialAge>=13 && initialAge < 18){
       console.log("You are a teenager.");
   }else{
       console.log("You are old.");
   }

  };
   this.yearPasses=function(){
          // Increment the age of the person in here
          return initialAge++;
   };
}

// for java
public class Person {
    private int age;
    	
  
	public Person(int initialAge) {
  		// Add some more code to run some checks on initialAge
          this.age = initialAge;
          if(age < 0 ){
              this.age=0;
              System.out.println("Age is not valid, setting age to 0.");
          } 
	}

	public void amIOld() {
  		// Write code determining if this person's age is old and print the correct statement:
          if(this.age < 13){  
            System.out.println("You are young.");
          }else if(this.age >= 13 && this.age < 18){
              System.out.println("You are a teenager.");
          }else{
              System.out.println("You are old.");
          }
	}

	public void yearPasses() {
  		// Increment this person's age.
        this.age++;
	}

using System;
using System.Collections.Generic;
using System.IO;

class Person {
    public int age;     
	public Person(int initialAge) {
        // Add some more code to run some checks on initialAge
       if(initialAge < 0)
        {
            Console.WriteLine("Age is not valid, setting age to 0.");
            age = 0;
         
        }
        else
        {
              age = initialAge;
        } 
        
        
     }
     public void amIOld() {
        // Do some computations in here and print out the correct statement to the console 
            if(age < 13)
            {
                Console.WriteLine("You are Young.");
            }
            else if(age >= 13 && age < 18)
            {
                Console.WriteLine("You are a teenager.");
            }
            else if(age >=18)
            {
                Console.WriteLine("You are old.");
            }
     }

     public void yearPasses() {
        // Increment the age of the person in here
        age++;
     }

static void Main(String[] args) {
        int T=int.Parse(Console.In.ReadLine());
        for (int i = 0; i < T; i++) {
            int age=int.Parse(Console.In.ReadLine());
            Person p=new Person(age);
             p.amIOld();
                for (int j = 0; j < 3; j++) {
                  p.yearPasses();
                }
                p.amIOld();
                Console.WriteLine();
        }
    }
}