while True:
    try:
        a, b = input(), input()
        if len(a) > len(b):
            a, b = b, a # a存短，b存长
        Max = 0
        for i in range(len(a)):
            for j in range(i, len(a)):
                if a[i:j+1] in b and j + 1 - i > Max:
                    Max = j + 1 - i
        print(Max)
    except:
        break