Balanced Parentheses with Min Stack

Given a string containing only the characters '(', ')', '{', '}', '[' and ']', determine if the input string is a valid sequence of parentheses. A valid sequence must satisfy the following conditions: 1. Open brackets must be closed by the corresponding type of brackets. 2. Open brackets must be closed in the correct order. Implement a function that reads from standard input and prints 'true' if the input string is valid, otherwise print 'false'. ### Example: Input: {[()]} Output: true ### Input format: A single line string containing only '(', ')', '{', '}', '[', ']', with a maximum length of 100. ### Output format: 'true' or 'false'.