Given marks of students, find how many passed (>= 40).

Difficulty: Easy

Phase: 6 · Mixed Logical Challenges

XP Reward: 10 XP

Topics: Mixed Logical Challenges, Easy

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

Problem Description

Validate whether a given string is a valid IPv4 address. 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: 192.168.1.1

Output: Valid

Explanation: Sample execution for input 192.168.1.1