string1 = list(input())
string2 = list(input())
i = 0
while i < len(string1):
    if string1[i] not in string2:
        string1.pop(i)
    else:
        i += 1
if len(string1) == 0:
    print(0,end='')
    exit()
for str in string1:
    if string1.count(str) < string2.count(str):
        print(0,end='')
        exit()
print(len(string2),end='')