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{
public static void Main(String[] g){
string[] s=new string[200];
for(int i=0;i<200;i++){
s[i]=Console.ReadLine();
}

string[] s1=new string[2];
long a, b, d, dk;

foreach(string sa in s){
if(sa==null)continue;
s1=sa.Split(' ');

a=long.Parse(s1[0]);
b=long.Parse(s1[1]);
d=a+b;
dk=d.ToString().Length;
Console.WriteLine(dk);
}

}}