Print frequency of each digit in a number.

Difficulty: Medium

Phase: 6 · Mixed Logical Challenges

XP Reward: 20 XP

Topics: Mixed Logical Challenges, Medium

Supported Languages: Python, JavaScript, C, C++, Java

Problem Description

Given string containing characters '(', ')', '{', '}', '[' and ']', check if the brackets are valid and balanced. Print 'Valid' or 'Invalid'. Input Format: Read input from standard input (stdin). Output Format: Print the result to standard output (stdout).

Constraints

-10^9 <= N <= 10^9

Examples

Example 1

Input: ()[]{}

Output: Valid

Explanation: Sample execution for input ()[]{}