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.Scanner;

class Main {
    private static void solve() {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int a = scanner.nextInt();
            int b = scanner.nextInt();
            System.out.println(String.valueOf(a + b).length());
        }
    }

    public static void main(String... args) {
        solve();
    }
}