Account Balance Calculation

Given a series of banking transactions, compute the final account balance. Each transaction is presented in the format D amount for a deposit and W amount for a withdrawal.

The account balance starts at 0. For each transaction, update the balance accordingly. Deposits add to the balance and withdrawals subtract from the balance.

The operation can be mathematically represented as: \[ B = \sum_{i=1}^{N} v_i \] where \(v_i\) is a positive value if the transaction is a deposit and negative if it is a withdrawal.

inputFormat

The first line contains an integer N representing the number of transactions.

Each of the next N lines contains a transaction in the format D amount or W amount, where D denotes a deposit and W denotes a withdrawal. The amount is an integer.

outputFormat

Output a single integer which is the final account balance after processing all transactions.

4
D 300
D 200
D 100
D 50

650