题解 | #公共子串计算#

import java.util.*;

public class Main {
    public static void main(String args[]) {
        Scanner input = new Scanner(System.in);
        String s1 = input.nextLine();
        String s2 = input.nextLine();
        int result =  0;
        if (s1.length() < s2.length()) {
            String temp = s1;
            s1 = s2;
            s2 = temp;
        }
        for (int i = 0; i < s2.length(); i++) {
            for (int j = s2.length(); j > i; j--) {
                if (s1.contains(s2.substring(i, j))) {
                    result = Math.max(result, j - i);
                    break;
                }
            }
        }
        System.out.println(result);
    }
}