import java.util.*;
import java.io.*;

class Main {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
   while(sc.hasNext()){
	   int a=sc.nextInt();
	   int b=sc.nextInt();
	   int keta=1;
	   if((a+b)/10>0)keta++;
	   if((a+b)/100>0)keta++;
	   if((a+b)/1000>0)keta++;
	   if((a+b)/10000>0)keta++;
	   if((a+b)/100000>0)keta++;
	   if((a+b)/1000000>0)keta++;
	   System.out.println(keta);
	  }
   
      }
}
/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