class BankingSystem:
    def __init__(self):
        # Initialize a dictionary to store account balance
        self.accounts = {}
        # Initialize a dictionary to store the total transaction value per account
        self.transaction_totals = {}

    def create_account(self, timestamp, account_id):
        # Check if account already exists
        if account_id in self.accounts:
            return "false"
        else:
            # Create account with a balance of 0 and set its transaction total to 0
            self.accounts[account_id] = 0
            self.transaction_totals[account_id] = 0
            return "true"

    def deposit(self, timestamp, account_id, amount):
        # Check if account exists
        if account_id not in self.accounts:
            return ""
        else:
            # Add amount to account balance and transaction total
            self.accounts[account_id] += amount
            self.transaction_totals[account_id] += amount
            return str(self.accounts[account_id])

    def pay(self, timestamp, account_id, amount):
        # Check if account exists and has enough balance
        if account_id not in self.accounts or self.accounts[account_id] < amount:
            return ""
        else:
            # Subtract amount from account balance and add to transaction total
            self.accounts[account_id] -= amount
            self.transaction_totals[account_id] += amount
            return str(self.accounts[account_id])

    def top_activity(self, n):
        # Sort the accounts by the total value of transactions and account_id
        sorted_accounts = sorted(self.transaction_totals.items(), key=lambda item: (-item[1], item[0]))
        # Take the top n accounts or all accounts if there are less than n
        top_accounts = sorted_accounts[:n]
        # Format the output
        return ", ".join([f"{account}({value})" for account, value in top_accounts])

    def process_queries(self, queries):
        results = []
        for query in queries:
            operation, *params = query
            if operation == "CREATE_ACCOUNT":
                results.append(self.create_account(*params))
            elif operation == "DEPOSIT":
                results.append(self.deposit(*params))
            elif operation == "PAY":
                results.append(self.pay(*params))
            elif operation == "TOP_ACTIVITY":
                timestamp, n = params
                results.append(self.top_activity(int(n)))
        return results

# Example usage
banking_system = BankingSystem()
queries = [
    ["CREATE_ACCOUNT", "1", "account1"],
    ["CREATE_ACCOUNT", "2", "account2"],
    ["CREATE_ACCOUNT", "3", "account3"],
    ["DEPOSIT", "4", "account1", 2000],
    ["DEPOSIT", "5", "account2", 3000],
    ["DEPOSIT", "6", "account3", 4000],
    ["TOP_ACTIVITY", "7", 3],
    ["PAY", "8", "account1", 1500],
    ["DEPOSIT", "9", "account2", 250],
    ["DEPOSIT", "10", "account3", 250],
    ["TOP_ACTIVITY", "11", 3]
]
output = banking_system.process_queries(queries)
output