#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
from __builtin__ import iter as var
import random
import hashlib

__,____,___,_____ = sys,open,eval,False
random.seed(hashlib.sha1(open(__file__).read()).hexdigest())
_ = lambda x : x+1
v = var(___("__ohvygvaf__.enj_vachg".encode("rot_13")+"()").encode("uu"))
exec("w=[];".encode("rot_13"))
while 1<2:
    try:
        j = j+[v.next()]
    except StopIteration:
        r = ____(__file__[:-(len(j))]).read()
        z=var(''.join(j[::-1]))
        #     :D
        _____,j = not 1,[]
        while hashlib.sha1(r[:500]+r[-500:]).hexdigest() == "3b32b5601c722e59fd5b0ba81c31f230c3666ca1":
            try:
                x = z.next()
                j = j+[x]
            except StopIteration:
                if ''.join(j).index("5=UMW22!50") == 37:
                    import antigravity
                    __.exit("You van validate with the flag :)")
            if (_____ == 7 and ord(j[_____]) != _____+25) or \
               (_____ == 8 and ord(j[_____]) != _____+24) or \
               (_____ == 10 and j[_____] != r[-201]) or \
               (_____ == 11 and j[_____] != chr(ord(r[0])^ord(r[7]))) or \
               (_____ == 12 and j[_____] != r[240].upper()) or \
               (_____ == 13 and j[_____] != chr(ord(str(not True)[0])^ord("`"))) or \
               (_____ == 14 and j[_____] != ",") or \
               (_____ == 15 and j[_____] != chr(ord("L")+5)) or \
               (_____ == 16 and j[_____] != str(int(r[1088])-1)) or \
               (_____ == 17 and j[_____] != """'""") or \
               (_____ == 18 and j[_____] != chr(ord("+")+2)) or \
               (_____ == 9 and j[_____] != r[-845]):
                sys.exit()
            _____ += 1
    while len(__file__)%2:
        break
    __file__ += chr(random.randint(32,0x7e))
    if (_____ == 28 and j[_____] != "]") or \
       (_____ == 40 and j[_____] != ")") or \
       (_____ == 29 and j[_____] != "E") or \
       (_____ == 30 and j[_____] != "3") or \
       (_____ == 41 and not (j[_____-10] == j[_____] == "F")) or \
       (_____ == 43 and j[_____] != "7") or \
       (_____ == 38 and not (j[_____] == j[_____-6] == ",")) or \
       (_____ == 33 and j[_____] != "P") or \
       (_____ == 34 and j[_____] != str(int(j[_____-4])*3)) or \
       (_____ == 35 and j[_____] != "#") or \
       (_____ == 46 and not (j[_____-2] == j[_____] == j[_____-10] == "-") or \
       (_____ == 37 and j[_____] != "?") or \
       (_____ == 39 and j[_____] != "&") or \
       (_____ == 42 and j[_____] != "=") or \
       (_____ == 45 and j[_____] != chr(ord(j[_____-0x10])-2))):
        __.exit(":(")
    _(_____)