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.io.IOException;
import java.util.Scanner;

public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] aa = new int[2];
        int i = 1;
        while (sc.hasNext()){
            if (i % 2 != 0) {
                aa[0] = sc.nextInt();
                i++;
            }else {
                aa[1] = sc.nextInt();
                int c = aa[0] + aa[1];
                int digit = 0;
                while (c >= 10){
                    c = c / 10;
                    digit++;
                }
                System.out.println(digit + 1);
                i++;
            }
        }
    }
}