s = input()
t = input()
if len(t) == 1:
    if t in s:
        print(-1)
    else:
        print(0)
    exit()
    
ans = 0
pos = 0
n = len(t)
while pos + n <= len(s):
    if s[pos:pos + n] == t:
        ans += 1
        pos += n - 1
    else:
        pos += 1
print(ans)
exit()