Bank Account Simulation

This problem requires you to simulate a simple banking system. You need to design a BankAccount class that supports the following operations:

• Deposit: Adds an amount to the account if the amount is positive. On success, it should output: Deposited {amount}. New balance is {balance}.. If the deposit amount is not positive, output: Deposit amount must be positive.
• Withdraw: Deducts an amount from the account if the amount is positive and sufficient funds are available. On success, it should output: Withdrew {amount}. New balance is {balance}.. If the withdrawal amount exceeds the current balance, output: Insufficient funds.. If the withdrawal amount is not positive, output: Withdrawal amount must be positive.
• Balance: Reports the current balance as an integer.

The balance update follows the formula: \(\text{balance}_{new} = \text{balance}_{old} \pm \text{amount}\).

You will receive a series of commands, and your program must process each command accordingly.

inputFormat

The input begins with a line containing an integer representing the initial balance of the account.

The second line contains an integer n representing the number of operations.

Each of the following n lines contains a command. A command is one of the following:

• deposit X — Deposit an amount X into the account.
• withdraw X — Withdraw an amount X from the account.
• balance — Query the current balance of the account.

Note: X is an integer.

outputFormat

For each command in the input, output the result on a separate line:

• If the command is deposit or withdraw, output the corresponding message.
• If the command is balance, output the current balance as an integer.

## sample

100
3
balance
withdraw 50
balance

100
Withdrew 50. New balance is 50.
50

</p>