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;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{   
    class Program
    {
           static void Main(string[] args) {
            while(true)
            {

                string sss = Console.ReadLine();
                if (sss== null)
                    return;
                int[] sss2 = sss.Split().Select(int.Parse).ToArray();
                int  a = sss2[0]+sss2[1];  string b = a.ToString();      Console.WriteLine("{0}",b.Length);

            }
        }
    }
    }