Problem:
Score : 100 points

Problem Statement

Cat Snuke is learning to write characters.
Today, he practiced writing digits 1 and 9, but he did it the other way around.

You are given a three-digit integer n written by Snuke.
Print the integer obtained by replacing each digit 1 with 9 and each digit 9 with 1 in n.

Constraints

111 \leq n \leq 999

n is an integer consisting of digits 1 and 9.

Input

Input is given from Standard Input in the following format:

n

Output

Print the integer obtained by replacing each occurrence of 1 with 9 and each occurrence of 9 with 1 in n.

Sample Input 1

119

Sample Output 1

991

Replace the 9 in the ones place with 1, the 1 in the tens place with 9 and the 1 in the hundreds place with 9. The answer is 991.

Sample Input 2

999

Sample Output 2

111

Solution in Ruby (2.3.3) (judge verdict: Runtime Error)

tmp = []
while line = $stdin.gets
  tmp << line.chomp.split
end

N = tmp[0][0].to_i # 偶数
arr = tmp[1].map(&:to_i)

count = 0
elm_1 = arr[0]
elm_2 = arr[1]

arr.each_with_index do |v, i|
  next if i < 2
  count += 1 if v != arr[i-2]
end

p count