# https://tjkendev.github.io/procon-library/python/string/z-algorithm.html
def z_algo(S):
    N = len(S)
    A = [0]*N
    i = 1; j = 0
    A[0] = l = len(S)
    while i < l:
        while i+j < l and S[j] == S[i+j]:
            j += 1
        if not j:
            i += 1
            continue
        A[i] = j
        k = 1
        while l-i > k < j - A[k]:
            A[i+k] = A[k]
            k += 1
        i += k; j -= k
    return A

S = input()
T = input()
z = z_algo(T+S)
cnt = 0
i = len(T)
while i<len(T)+len(S):
    if z[i]>=len(T):
        cnt += 1
        i+=len(T)-1
    else:
        i+=1
    
if len(T)==1:
    if cnt>0:
        print(-1)
    else:
        print(0)
else:
    print(cnt)