import sys
sys.set_int_max_str_digits(0)
S = input()
T = input()
N = len(S)
M = len(T)

if M == 1 and S.find(T) != -1:
    exit(print(-1))

cur = 0
ans = 0
while cur < N:
    # cur から M文字の一致を確認する
    flag = True
    for i in range(M):
        # T[i] vs S[cur + i]
        if T[i] != S[cur + i]:
            flag = False
            break
    if flag:
        ans += 1
        cur += M
    else:
        cur += 1

print(ans)