# 20240925
s1 = input().lower()
s2 = input().lower()
if len(s1) > len(s2):
    s1,s2 = s2,s1
p = 0
for i in range(len(s1)):
    for j in range(i+1,len(s1)+1):
        if s1[i:j] in s2 and j-i > p:
            p = j-i
print(p)#这里的p为什么不是j-i+1?