import java.util.Scanner;

public class Main {

	/**
	 * ?????°??????????????????????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????´??° a ??¨ b
	 * ??????????????????????????§??????????????????????????????????????\????????????????????§????????????????????????a ??¨ b ??????????????´??°??¨????????????
	 * 
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO ?????????????????????????????????????????????

		Scanner sc = new Scanner(System.in);
		while (sc.hasNextInt()) {
			int a = sc.nextInt();
			int b = sc.nextInt();

			int divisorNum = 0;
			for (int i = 0; i <= 2; i++) {
				int sum = a + b;
				int keta = 1;
				divisorNum = 0; // ??¨????????????????????°
				while (true) {
					if (sum / keta > 0) {
						keta *= 10;
						divisorNum++;
					} else {
						break;
					}
				}

			}

			System.out.println(divisorNum);
		}
	}

}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz