def main():
    s = input()
    t = input()
    ans = solve(s, t)
    print(ans)


def solve(s, t):
    ls, lt = len(s), len(t)
    if ls < lt:
        return 0
    if lt == 1:
        if t in s:
            return -1
        else:
            return 0
    ans = 0
    i = 0
    while i < ls - lt + 1:
        if s[i:i + lt] != t:
            ans += 1
            i += lt - 1
        else:
            i += 1
    return ans

if __name__ == '__main__':
    main()