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