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

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

    ans = 0
    for i in range(len(s) - len(t) + 1):
        if s[i:i + len(t)] == t:
            ans += 1
    print(ans)


if __name__ == "__main__":
    main()