Problem Statement

You are given a string s consisting of two kinds of characters, 0 and 1.
Print the string obtained by replacing 0 with 1 and 1 with 0 in s.

Input

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

Output

Print the answer in a single line.

Constraints

• The length of s is between 1 and 10, inclusive.
• s consists of two kinds of characters, 0 and 1.

Sample Input 1

01

Sample Output 1

10

The 1-st character of s is 1, so the 1-st character to print is 0.
The 2-nd character of s is 0, so the 2-nd character to print is 1.

Sample Input 2

1011

Sample Output 2

0100

Sample Input 3

100100001

Sample Output 3

011011110

见题面 Input 部分

见题面 Output 部分