S = input()
T = input()
NT=len(T)

c = S.count(T)

if c > 0:
    if len(T) == 1:
        print(-1)
    else:
        ans = 0
        p = 0
        while True:
            p = S.find(T, p)
            if p == -1:
                break
            ans += 1
            p += NT-1
        print(ans)
else:
    print(0)