S = input()
T = input()
count = 0 
T_length = len(T)
st = 0
if T in S and T_length == 1:
    print(-1)
else:
    while 1:
        if S[st:T_length + st] == T:
            count += 1
            st += T_length - 1
        else:
            st += 1
        if st > len(S):
            break
    print(count)