Assignment 3: Crack the Code!

package project;

import java.util.Scanner;

public class Assignment2 {

    public static void main(String[] args) {

        int flag = 0;
        Scanner scanner = new Scanner(System.in);
        System.out.println("Welcome. What is your name?");
        String name = scanner.nextLine();
        System.out.println("Hello " + name + "." + " Try your best to crack the code!");

        while(flag == 0) {

        System.out.println("PHASE 1");                                      //phase 1
        System.out.println("Enter a number :");
        int num1 = scanner.nextInt();
            if(num1 != 3) {
                flag = 1;
                System.out.println("Sorry, that was incorrect!");
                System.out.println("Better luck next time!");
            }
            else {
                System.out.println("Correct!");
            }

        int num69 = 0;
        if(num1 == 3) {
            System.out.println("\nPHASE 2");                                    //phase 2
            System.out.println("Enter a number :");
            int num2 = scanner.nextInt();                                   //phase 2
            if(num2 == 1 | (num2 >= 33 & num2 <= 100) ) {
                System.out.println("Correct!");
                num69 = 1;
            }
            else {
                flag = 1;
                System.out.println("Sorry, that was incorrect!");
                System.out.println("Better luck next time!");
            }
        }

        if(num69 == 1) {
            System.out.println("\nPHASE 3");                                    //phase 2
            System.out.println("Enter a number :");
            int num3 = scanner.nextInt();
            if(num3 > 1 && (num3 % 3 == 0 || num3 % 7 == 0)){
                System.out.println("Correct!");
                System.out.println("You have cracked the code!");
                flag = 2;
            }
            else {
                flag = 1;
            System.out.println("Sorry, that was incorrect!");
            System.out.println("Better luck next time!");
            }
          }


        }

    }


}