def main():

    data1 = str(input())
    data2 = str(input())
    check = [x for x in data2]

    for i in data1:
        flg = False
        if i in check:
            check.remove(i)
            flg = True

        if not(flg):
            print("NO")
            return

    print("YES")

if __name__ == "__main__":
    main()