Given a positive integer ~N~ with no zeroes in its base-10 representation, compute the smallest positive integer greater than ~N~ with no zeroes in its base-10 representation.

Constraints

~1 \le N \le 999\,999~

~N~ will not contain the digit zero in its base-10 representation.

Input Specification

The input consists of a single line containing the integer ~N~.

Output Specification

Print, on a single line, the smallest positive integer greater than ~N~ with no zeroes in its base-10 representation.

Sample Input 1

99

Sample Output 1

111

Sample Input 2

1234

Sample Output 2

1235