#include <math.h>
#include <stack>
#include <stdio.h>
#include <iostream>
#include <vector>
#include <iomanip>
#include <string.h>
#include <algorithm>
using namespace std;
#define LL long long
const int N = 1e5 + 10;
const int INF = 0x3f3f3f3f;
char a[100],b[100];
int main()
{
    cin >> a >> b;
    int lena, lenb;
    lena = strlen(a);
    lenb = strlen(b);
    int  maxx = 0;
    for(int i = 0; i < lena; i++)
    {
        for(int j = 0; j < lenb; j++)
        {
            int num = 0;
            while(j + num < lenb && a[i + num] == b[j + num])
            {
                num++;
            }
            maxx = max(maxx,num);
        }
    }
    cout << maxx << endl;
    return 0;
}```