S = list(input())
n = len(S)
T = list(input())
m = len(T)

if m == 1:
    if T[0] in S:
        print(-1)
    else:
        print(0)
else:
    if m > n:
        print(0)
    else:
        ans = 0
        i = 0
        while i <= len(S) - m:
            if S[i:i + m] == T:
                S.insert(i + m - 1, '.')
                ans += 1
            i += 1
        print(ans)