S = str(input())
T = str(input())
N = len(S)
lenT = len(T)

if lenT == 1 and T in S:
  print(-1)
elif lenT == 2 and T[0] == T[1]:
  n = 0
  ans = 0
  for i in range(N+lenT):
    if T == S[i:i+lenT]:
      ans += 1
      n += 1
    if i == N+n-1:
      break
  print(ans)
else:
  print(S.count(T))