import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        }
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        }
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        }
    } main {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) while (sc.hasNext()) {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        } sc.hasNext() sc.hasNext sc {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        } int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next()); num Integer.parseInt(sc.next()) + Integer.parseInt(sc.next()) Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int ans = 1; ans 1 while (num / 10 != 0) {
                ans++;
                num /= 10;
            } num / 10 != 0 num / 10 num 10 0 {
                ans++;
                num /= 10;
            } ans++ ans num /= 10 num 10 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        }
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        }
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int num = Integer.parseInt(sc.next()) + Integer.parseInt(sc.next());
            int ans = 1;

            while (num / 10 != 0) {
                ans++;
                num /= 10;
            }
            System.out.println(ans);
        }
    }
}