import sys
import math


def input(): return sys.stdin.readline().rstrip('\n')


def main():
    s = input()
    t = input()
    if len(t) == 1:
        if s.find(t) == -1: return 0
        return -1
    cnt = 0
    while True:
        idx = s.find(t)
        if idx == -1:
            return cnt
        s = s[idx + len(t) - 1:]
        cnt += 1


if __name__ == '__main__':
    ret = main()
    if ret is not None:
        print(ret)