import math
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int, sys.stdin.readline().rstrip().split())
def LI(): return list(map(int, sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())

s = S()
t = S()

if not t in s:
    print(0)
elif len(t) == 1:
    print(-1)
else:
    cnt = 0
    n = len(t)
    while t in s:
        p = s.find(t)
        s = s[p+n-1:]
        cnt += 1
    print(cnt)