33845번: PNUPC에 한 번도 빠지지 않고 출연한 산지니가 새삼 대단하다고 느껴지네 ↗

"""
[33845: PNUPC에 한 번도 빠지지 않고 출연한 산지니가 새삼 대단하다고 느껴지네](https://www.acmicpc.net/problem/33845)

Tier: Bronze 3 
Category: implementation, string
"""


import sys
from math import sqrt, pi, sin, factorial, ceil, floor
from datetime import datetime, timedelta

SYS_INPUT = True
RECURSION_LIMIT = 10 ** 7
SET_RECURSION = False
BLANK = " "

if SET_RECURSION:
  sys.setrecursionlimit(RECURSION_LIMIT)

inp = lambda : sys.stdin.readline().rstrip() if SYS_INPUT else input()
mii = lambda : [*map(int,inp().split())]
mfi = lambda : [*map(float,inp().split())]
ii = lambda : int(inp())
fi = lambda : float(inp())
isplit = lambda : inp().split()
p = print

def gcd(a, b): return gcd(b, a % b) if b > 0 else a
def lcm(a, b): return a * b // gcd(a, b)


def solve():
  s = inp()
  t = inp()

  ans = ""
  for i in t:
    if i not in s:
      ans += i

  print(ans)

if __name__ == "__main__":
  tc = 1
  for t in range(1, tc+1):
    ret = solve()