Triangle Validity

Time Limit: 1 sec

**The Problem**

This is a simple task for you.You have to write a simple code that can take three input **a, b** and **c **which are the length of the three sides of a phythagorian triangle and check the triangle is valid or invalid.

**The Input**

The input file contains several lines. Each line contains three positive integers **a, b, c < 100** which indicates the three sides of a triangle. Input is terminated by **EOF**.

**The Output**

For each input lines print a comment. Which contains if the triangle is right then **“Valid.”, **if the triangle is not right then **“Invalid.”** (Quote for clarification) in a separate line.

**Sample Input**

6 9 4

13 5 12

**Sample Output**

Invalid.

Valid.

Problem Setter: Milton Deb