Count how many even digits a number contains.

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

Given N, print an N x N checkerboard alternating between 0 and 1 starting with 0 at (0,0). 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: 3

Output: 0 1 0 1 0 1 0 1 0

Explanation: Sample execution for input 3