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 JAVA (judge verdict: Accepted)

import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

public class Main {
	public static void main(String args[] ) throws Exception {
		Scanner scanner = new Scanner(System.in);
		while(scanner.hasNext()){	
			int a = scanner.nextInt();//??????????????°??????????????????
			int b = scanner.nextInt();//????????????????????????????????°??????????????????
			int ans = a+b;
			ans = String.valueOf( ans ).length();
			System.out.println(ans);
		}
    }
}