class Bank:
    def __init__(self, balance: List[int]):
        # Store the balance list. 
        # We keep the length to avoid calling len() repeatedly in checks.
        self.balance = balance
        self.n = len(balance)

    def transfer(self, account1: int, account2: int, money: int) -> bool:
        # Check if both accounts exist (1 <= account <= n)
        if not (1 <= account1 <= self.n and 1 <= account2 <= self.n):
            return False
        
        # Check if sender has enough money
        # Note: account numbers are 1-indexed, list is 0-indexed
        if self.balance[account1 - 1] < money:
            return False
        
        # Perform transfer
        self.balance[account1 - 1] -= money
        self.balance[account2 - 1] += money
        return True

    def deposit(self, account: int, money: int) -> bool:
        # Check if account exists
        if not (1 <= account <= self.n):
            return False
        
        # Perform deposit
        self.balance[account - 1] += money
        return True

    def withdraw(self, account: int, money: int) -> bool:
        # Check if account exists
        if not (1 <= account <= self.n):
            return False
        
        # Check if account has enough money
        if self.balance[account - 1] < money:
            return False
        
        # Perform withdrawal
        self.balance[account - 1] -= money
        return True