Problem Statement

Given a positive integer N, print a string of N zeros and N+1 ones where 0 and 1 alternate.

Input

The input is given from Standard Input in the following format:
N

Output

Print the answer.

Constraints

• N is an integer.
• $1 \leq N \leq 100$

Sample Input 1

4

Sample Output 1

101010101

A string of four zeros and five ones where 0 and 1 alternate is 101010101.

Sample Input 2

1

Sample Output 2

101

Sample Input 3

10

Sample Output 3

101010101010101010101

见题面 Input 部分

见题面 Output 部分