def main():
    s = input()
    t = input()

    if len(t) == 1:
        if t in s:
            exit(print(-1))
        else:
            exit(print(0))

    ans = 0
    i = 0
    while i < len(s):
        if s[i:i + len(t)] == t:
            ans += 1
            i += len(t) - 1
        else:
            i += 1
    print(ans)


if __name__ == "__main__":
    main()