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 1:
    try:
        if s[pos:pos + n] == t:
            ans += 1
            pos = pos + n - 1
        else:
            pos += 1
    except IndexError:
        break
print(ans)