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 Python (3.4.3) (judge verdict: Accepted)

import sys
input = sys.stdin.readline
na = input()
n = ['8'] * 3
for i in range(3) :
    n[i] = na[i]
for i in range(3) :
    if n[i] == '1' :
        n[i] = '9'
        continue
    elif n[i] == '9' :
        n[i] = '1'
N = 0
for i in range(3) :
    k = int(n[i])
    N += k * 10 ** (2-i)
print(N)