s = input()
t = input()

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

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