S = input().strip()
T = input().strip()

if len(T) == 1:
    if T in S:
        print(-1)
    else:
        print(0)
else:
    len_T = len(T)
    occurrences = []
    for i in range(len(S) - len_T + 1):
        if S[i:i+len_T] == T:
            occurrences.append(i)
    
    if not occurrences:
        print(0)
    else:
        intervals = []
        for s in occurrences:
            end = s + len_T - 2
            intervals.append((s, end))
        
        intervals.sort(key=lambda x: x[1])
        count = 0
        last_end = -1
        
        for start, end in intervals:
            if start > last_end:
                count += 1
                last_end = end
        
        print(count)