AOJ:0002

gistfile1.java

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scn = new Scanner(System.in);
		while(scn.hasNext()) {
			int a = scn.nextInt();
			int b = scn.nextInt();
			int ab = a + b;
			String str = ab + "";
			System.out.println(str.length());
		}
	}
}