Compute Third Angle of Triangle

Difficulty: Easy

Phase: 1 · Conditional Thinking

XP Reward: 10 XP

Topics: Conditional Thinking, Easy

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

Problem Description

Given two angles a and b of a triangle on separate lines, print the third angle. If invalid, print '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: 60 60

Output: 60

Explanation: Sample execution for input 60 60