from sys import stdin
def main():
    #入力
    readline=stdin.readline
    S=readline().strip()
    T=readline().strip()

    count=0
    i=0
    while i<len(S)-len(T)+1:
        if S[i:i+len(T)]==T:
            count+=1
            if len(T)==1: break
            else: i=i+len(T)-1
        else:
            i+=1

    if count==0:
        print(0)
    else:
        if len(T)==1:
            print(-1)
        else:
            print(count)
if __name__=="__main__":
    main()