# coding: utf-8
# Your code here!

import sys
readline = sys.stdin.readline
read = sys.stdin.read

#a = [int(i) for i in read().split()]


t = input()
s = input()

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

ans = 0
l = len(s)
while True:
    idx = t.find(s)
    if idx == -1: break
    ans += 1
    t = t[idx+l-1:]

print(ans)