We are given a string expression of size N which contains just opening and closing brackets of the types, $\text{'}(,27.$ C $.$ T and T$.$ The task is to check if the given expression contains balanced parentheses. Write algo$-$ rithm$/$ Pseudo Code to implement the above stated scenario.

Sample Input $"$O$"$

$"$O$\{[]\}"$

$"$O$\{"$

Sample Output Balanced

Balanced

Unbalanced