Maximum number
You are given a string composed of digits, which may optionally start with a '+' or '-' sign. Your task is to determine the maximum possible number by inserting any of the arithmetic operations '+', '-', '*', or '/' between any two adjacent digits in the string. The operations should follow the standard precedence rules for integers as implemented in major programming languages, without any constraints on the range of values.
Input
The input consists of a single line containing a sequence of characters. This sequence may begin with a digit or a '+' or '-' sign, followed by digits only. There is at least one digit present in the string. The total number of digits in the input does not exceed 250,000.
Output
Output a single line containing the solution to the problem. The result should be presented as an integer, without leading zeros and without a sign, unless necessary.