garciparedes
diff --git a/‎problems/2043_simple_bank_system.py
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+class Bank:
+
+    def __init__(self, balance: List[int]):
+        self.balance = balance
+
+    def transfer(self, account1: int, account2: int, money: int) -> bool:
+        if not self.withdraw(account1, money):
+            return False
+        if not self.deposit(account2, money):
+            self.deposit(account1, money)
+            return False
+        return True
+
+    def deposit(self, account: int, money: int) -> bool:
+        if account > len(self.balance):
+            return False
+        self.balance[account - 1] += money
+        return True
+
+    def withdraw(self, account: int, money: int) -> bool:
+        if account > len(self.balance):
+            return False
+        if self.balance[account - 1] < money:
+            return False
+        self.balance[account - 1] -= money
+        return True
+
+
+# Your Bank object will be instantiated and called as such:
+# obj = Bank(balance)
+# param_1 = obj.transfer(account1,account2,money)
+# param_2 = obj.deposit(account,money)
+# param_3 = obj.withdraw(account,money)