题解 | #公共子串计算#

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