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 {
	public static int a, b;
	public static void main(String[] args) {
		Scanner cin = new Scanner(System.in);
		while(cin.hasNextInt()){
			a = cin.nextInt();
			b = cin.nextInt();
			solve();
		}
	}
	
	public static void solve() {
		a += b;
		int ans = 1;
		while(a / 10 > 0){
			a /= 10;
			ans++;
		}
		System.out.println(ans);
	}
}