import java.util.*;
import java.io.*;
public class AtmCash{
    public static void main(String []args){
       int option, pin;
       int PIN[] = {1234,2243,4564,6768,6866,6865,4345,2344,5676,9898};
       float balance[] ={1000,1000,1000,1000,1000,1000,1000,1000,1000,1000};
     int Account_number[] = {123456789,223435332,456765454,345433434,334432343,345678976,342234545,56454332,343343432,345434323};
       int withdraw, deposit;
       System.out.println("*** Welcome to ELAC ATM ***");
       System.out.print("   1. Input PIN \n   2. Clear \n   3. Exit \nSelect the option : ");
       Scanner sc = new Scanner(System.in);
       option = sc.nextInt();
     int count = 0, flag = 0;
     int ch = 0;
     do{op
       switch(option) {
       case 1: System.out.println("Enter the PIN :");
               pin = sc.nextInt();
               for(int i=0; i<10; i++){
               if(pin == PIN[i]){
              flag = 1;
                   System.out.println("*** ELAC ATM System ***");
                   System.out.print("   1. Withdraw Cash \n   2. Deposit \n   3. Transfer \n   4. Balance Inquiry \n   5. Logout \nChoose option : ");
                   int option1 = sc.nextInt();
                   switch(option1) {
                       case 1: System.out.print("Enter money to be withdrawn:");
                               withdraw = sc.nextInt();
                               if(balance[i] >= withdraw) {
                                   balance[i] = balance[i] - withdraw;
                                   System.out.println("Please collect the money");
                          System.exit(0);
                               }
                               else{
                                   System.out.println("Insufficient Balance");
                          System.exit(0);
                       }  
                               break;
                       case 2: System.out.println("Enter money to be deposited:");
                               deposit = sc.nextInt();
                               balance[i] = balance[i] + deposit;
                               System.out.println("Your Money has been successfully deposited");
                       System.exit(0);
                               break;
                       case 3: System.out.print("Enter Account Number you wants to transfer : ");
                         int acc = sc.nextInt();
                       int flag1 = 0, flag2 = 0;
                       for(int j=0; j<10; j++){
                          if(acc == Account_number[j]){
                             flag1 = 1;  
                             System.out.print("Enter the amount : ");
                             int amount = sc.nextInt();
                             if(amount < balance[i])  {
                                 flag2 = 1;
                                balance[j] = balance[j] + amount;
                                balance[i] = balance[i] - amount;
                                System.out.println("Transfer Successfully");
                             }    
                          }
                       }
                       if(flag2 == 0){
                              System.out.println("Insufficient Balance");
                             System.exit(0);
                       }    
                       if(flag1 == 0){
                             System.out.println("Invalid Account Number ");
                             option = 3;
                       }     
                               break;
                       case 4: System.out.println("Balance : "+balance[i]);
                               break;
                       case 5: System.exit(0);
                               break;
                       default : System.out.println("Invalid option");
                                break;
                   }
             }
           }
           if(flag == 0){
               count++;
               System.out.println("Incorrect PIN, Please try again");
              if(count == 3){
                 System.out.println("Too many illegal attempts, Try again later");
                 System.exit(0);
              }
              else
                  option = 1;
           }
           
               break;
       case 2: option = 1;
               continue;
       case 3: System.exit(0);
               break;
       default : System.out.println("Invalid option");
                 break;
       }
    System.out.println(" Enter 1 to perform more operations: ");
    ch = sc.nextInt();
     }while(ch == 1);
  }
}