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 < len(s):
    if s[i:].startswith(t):
        i += len(t) - 1
        ans += 1
    else:
        i += 1

print(ans)