public class MainRun {  
  
    /** 
     * @param args 
     */  
    public static void main(String[] args) {  
  
          
        try {  
            BufferedReader strin=new BufferedReader(new InputStreamReader(System.in));  
            System.out.print("请输入一个字符串：");  
            String str = strin.readLine();  
              
            System.out.println("第一个："+str);  
              
            System.out.println("请输入第二个字符串：");  
            String str2 = strin.readLine();  
            System.out.println("第2个："+str2);  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
          
    }  
  
}  

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        String a = "word";
        String b = "word";
        int maxStringLength = 0;

        Scanner sc = new Scanner(System.in);
        
         a = sc.nextLine();
    
         b = sc.nextLine();
        
        
        for(int i = 0 ; i < a.length() ; i ++)
            for(int size = 1 ;size <= a.length() - i ; size ++)
            {
                String subString = a.substring(i, i + size);
                
                    if(b.contains(subString) && maxStringLength < size)
                    {
                        maxStringLength = size;
                    }       
            }
        System.out.println(maxStringLength);
    }

}