Problem:
Digit Number

Write a program which computes the digit number of sum of two integers a and b.

Input

There are several test cases. Each test case consists of two non-negative integers a and b which are separeted by a space in a line. The input terminates with EOF.

Constraints

0 ≤ a, b ≤ 1,000,000

The number of datasets ≤ 200

Output

Print the number of digits of a + b for each data set.

Sample Input

5 7
1 99
1000 999

Output for the Sample Input

2
3
4

Solution in C# (judge verdict: Accepted)

using System;
class main{
    static void Main(string[] args){
        for (int i = 0; i < 200;i++ ){
            string input = Console.ReadLine();
            if(!String.IsNullOrEmpty(input)){
                string[] data = input.Split(' ');
                Console.WriteLine((int.Parse(data[0] )+ int.Parse(data[1])).ToString().Length);
            }else{
                break;
            }
        }
    }
}