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;

namespace Volume0_0002_DigitNumber
{
    class Program
    {
        static void Main(string[] args)
        {
            while(true)
            {
                String input = Console.ReadLine();

                if (input == null) break;

                String[] inputs = input.Split(' ');
                int a = Convert.ToInt32( inputs[0] );
                int b = Convert.ToInt32( inputs[1] );

                Console.WriteLine((a + b).ToString().Length);
            }
        }
    }
}